Advanced Level Correlative Conjunctions Quiz

"Either the proposed merger will be approved by the shareholders, or the board of directors will have to explore alternative strategic options" is fully correct.

"Either...or" is correctly paired. Parallel structure is maintained — both elements are full clauses with future tense verbs (will be approved / will have to explore).

Subject-verb agreement is not an issue here because both clauses have different subjects with the same modal "will."

No error.

This deliberate No Error question tests whether advanced students correctly accept a properly formed "either...or" sentence with two full parallel future tense clauses in a formal corporate governance context.

 Parallel structure requires matching grammatical forms across "not only...but also."

After "not only" comes "to reduce operational costs" — a to-infinitive phrase.

After "but also" comes "improving employee productivity" — a gerund phrase.

These are not parallel — infinitive vs. gerund.

Correct sentence: "The new policy is designed not only to reduce operational costs but also to improve employee productivity."

Both elements must be to-infinitive phrases.

Option B's "improving" (gerund) breaks the parallelism established by "to reduce" (infinitive).

Infinitive-gerund parallelism mismatch in "not only...but also" is a standard advanced error spotting question.

With "neither...nor," the verb agrees with the subject closer to it — "the senior management team" is the nearer subject.

"The senior management team" is a collective noun acting as a single unit → singular verb "was aware." "Were" (plural) is wrong.

Correct: "Neither the CEO nor the senior management team was aware of the financial irregularities before the audit."

The formal corporate register (CEO, senior management team, financial irregularities, audit) disguises the standard proximity rule — the key is that "team" is a collective singular noun requiring "was," not "were."

"Not only has she mastered three programming languages, but she has also developed several commercially successful applications" is fully correct.

"Not only" at the start requires inversion — "has she mastered" correctly inverts the auxiliary.

"But she has also developed" — the subject "she" is correctly retained with the auxiliary "has" in the second clause.

Present perfect is consistently maintained across both clauses.

Parallel structure: both elements are present perfect clauses.

No error.

This deliberate No Error question tests whether advanced students correctly accept a properly formed "not only...but also" sentence with present perfect tense inversion without manufacturing errors from the complex structure.

Parallel structure requires matching grammatical forms across "both...and."

After "both" comes "a talented musician" — a noun phrase.

After "and" comes "she has exceptional skill as a painter" — a full clause with subject + verb.

These are not parallel — noun phrase vs clause.

Correct sentence: "She is both a talented musician and an exceptional painter."

Both elements after "both...and" must be noun phrases.

The clause "she has exceptional skill as a painter" breaks parallelism — the subject "she" and auxiliary "has" are redundant when the governing "she is" already applies to both.

This noun phrase vs clause mismatch in "both...and" is a classic advanced parallel structure question.

 "Either the production team must increase their output or the deadlines must be revised to reflect the current capacity constraints" is fully correct.

"Either...or" is correctly paired.

Parallel structure: both elements are full modal clauses (must increase / must be revised).

"Their" correctly refers to "the production team" (collective plural pronoun usage in this context).

"To reflect the current capacity constraints" is a purpose infinitive correctly modifying "revised."

No error.

This deliberate No Error question uses a formal production-management register to test whether advanced students correctly confirm a properly formed "either...or" sentence with two differently structured but grammatically parallel modal clauses.

 Parallel structure requires matching grammatical forms across "not only...but also."

After "not only" comes "excels at academic work" — a verb phrase (the subject "she" governs both).

After "but" comes "her creative projects are also of a very high standard" — a full clause with a new subject "her creative projects."

This breaks parallelism — verb phrase vs full clause.

Correct sentence: "She not only excels at academic work but also produces creative projects of a very high standard" — both verb phrases with the same subject "she."

The introduction of a new subject ("her creative projects") after "but" destroys the parallel structure.

"Either the senior management team must approve the proposal or it will have to be withdrawn from consideration entirely" is fully correct.

"Either...or" is correctly paired.

The two clauses use different tenses (must approve vs will have to be withdrawn) — but this is acceptable because the two scenarios represent different outcomes with different temporal implications.

"It" correctly refers to "the proposal."

Parallel structure at the clause level is maintained — both are independent clauses.

No error.

This deliberate No Error question tests whether advanced students incorrectly flag the different modal structures (must vs will have to) as a parallelism error — they are not required to match modals, only grammatical categories.

The placement of "not only" determines what is emphasised and what must be parallel.

"To not only disclose...but also to submit" — "not only" is placed inside the infinitive ("to not only disclose"), creating a split infinitive structure that is non-standard.

The correct placement: "not only to disclose their environmental impact but also to submit detailed remediation plans" — "not only" precedes the first "to" and "but also" precedes the second "to," maintaining infinitive-infinitive parallel structure.

Option B's "to not only disclose" splits the infinitive unnecessarily — "not only to disclose" is the standard formal structure.

"Both the financial report and the operational review have been submitted to the board for their consideration" is fully correct.

"Both...and" correctly pairs two noun phrases.

"Both the financial report and the operational review" is a compound subject — plural → "have been submitted" (plural present perfect passive) is correct.

"For their consideration" — "their" refers to the board members collectively — no error.

No error throughout.

This deliberate No Error question tests whether advanced students correctly accept a "both...and" sentence where the compound subject correctly governs a plural verb in a passive construction — without incorrectly flagging the passive voice or the plural verb as errors.

With "neither...nor," the verb agrees with the subject closer to it — "the revised timeline" (singular) is the nearer subject.

The verb must be singular: "was acceptable," not "were acceptable." Proximity rule: "revised timeline" is singular → "was."

Had the sentence been "Neither the revised timeline nor the proposed budgets were acceptable," the plural "were" would be correct because "proposed budgets" would be the nearer plural subject.

The formal governance register (proposed budget, revised timeline, steering committee) disguises the standard proximity rule — isolate the nearer subject ("the revised timeline" = singular) and match the verb accordingly.

Tense consistency across "not only...but also" is required.

"Did the investigation reveal" is past tense (simple past with inversion) — "but it also exposed" must also be past tense.

"Exposes" (present tense) in option B breaks tense consistency.

Correct: "Not only did the investigation reveal serious procedural violations, but it also exposed a fundamental lack of institutional accountability."

The inversion in "not only did the investigation reveal" is correctly formed — the error is exclusively the present tense "exposes" where past tense "exposed" is required.

This tense inconsistency in "not only...but also" is a signature advanced error spotting question.

"Both...and" creates a compound subject — "the preliminary investigation and the subsequent audit" — which is plural.

The verb must be plural: "have revealed," not "has revealed."

"Both + noun + and + noun" always creates a plural compound subject regardless of whether each individual noun is singular.

"Has" (singular) is wrong for a plural compound subject.

Correct: "Both the preliminary investigation and the subsequent audit have revealed significant discrepancies in the financial records."

This verb agreement error in "both...and" structures is a standard advanced error spotting question — the formality of the financial register makes "has" sound correct to students not focused on the grammatical subject.

"The report not only highlighted the inadequacies in the existing framework but also recommended a comprehensive set of reforms to address the identified gaps" is fully correct.

"Not only...but also" correctly pairs two past tense verb phrases — "highlighted the inadequacies" and "recommended a comprehensive set of reforms" — perfectly parallel.

"To address the identified gaps" is a purpose infinitive correctly modifying "reforms."

No inversion is needed because "not only" is placed mid-sentence.

No error.

This No Error question uses the most formal policy-reform register to test whether advanced students can confirm correct "not only...but also" parallelism in a complex multi-phrase sentence.

Parallel structure requires matching grammatical forms across "not only...but also."

After "not only" comes "manages her professional responsibilities with remarkable efficiency" — a verb phrase (verb + object + adverb phrase).

After "but also" comes "her personal life with admirable balance" — only an object + adverb phrase, missing the governing verb "manages."

The verb "manages" must be present or implied in the second element.

Correct: "She not only manages her professional responsibilities with remarkable efficiency but also manages her personal life with admirable balance" (explicit) or "She manages not only her professional responsibilities with remarkable efficiency but also her personal life with admirable balance" (repositioned).

The missing verb in option B breaks the parallel verb phrase structure.

With "neither...nor," the verb agrees with the subject closer to it — "the time constraints" (plural) is the nearer subject.

The verb must be plural: "have deterred," not "has deterred." Proximity rule applied: "time constraints" is plural → "have."

Had the sentence been "Neither the time constraints nor the complexity of the subject matter has deterred her," the singular "has" would be correct because "the complexity" (singular) would be the nearer subject.

The academic-research register (complexity, subject matter, time constraints, unwavering dedication) disguises the standard proximity rule error.

"Both...and" creates a plural compound subject — "the structural integrity of the building" and "the safety protocols" — plural.

The verb must be plural: "have been called into question," not "has been called into question."

The extreme length of the subject phrase in option A (containing a relative clause "that were in place at the time of the incident") is designed to make students forget the compound nature of the subject by the time they reach the verb.

"Has" (singular) in option B is wrong for the plural "both...and" compound subject.

This long-subject + "both...and" verb agreement trap is the most advanced form of this error.

Parallel structure requires matching grammatical forms across "not only...but also."

After "not only" comes "exceptionally skilled in her technical domain" — an adjective phrase (complement of "is").

After "but also" comes "demonstrates remarkable interpersonal abilities" — a verb phrase.

These are not parallel — adjective phrase vs verb phrase.

Correct: "She is not only exceptionally skilled in her technical domain but also remarkably adept at interpersonal communication" (both adjective phrases) or "She not only demonstrates exceptional technical skill but also demonstrates remarkable interpersonal abilities" (both verb phrases).

The adjective-verb phrase mismatch in option B is the error.

"Either the proposed restructuring plan will be adopted by the board, or a new strategic direction will have to be charted for the organisation" is fully correct.

"Either...or" is correctly paired.

Both elements are full passive clauses with future modals (will be adopted / will have to be charted).

The different passive constructions (simple passive vs modal passive) are both grammatically valid — they do not create a parallelism error because both are clauses at the same grammatical level.

No error.

This deliberate No Error question tests whether advanced students incorrectly flag different passive structures within an "either...or" sentence as parallelism violations — they are not.

Parallel structure across "not only...but also" requires matching forms.

After "not only" comes "proficient in the required technical skills" — an adjective phrase (complement of "was").

After "but also" comes "that she possessed exceptional leadership qualities" — a that-clause.

These are not parallel — adjective phrase vs that-clause.

Correct: "The assessment revealed that the candidate was not only proficient in the required technical skills but also exceptional in her leadership qualities" (both adjective phrases) or restructure to two parallel that-clauses.

"But also that she possessed" introduces a "that" clause after "but also" that has no corresponding "that" after "not only" — creating an asymmetric structure.

Parallel structure requires all elements in a series joined by conjunctions to be in the same grammatical form.

"Won" and "received" are both past tense active verbs — parallel.

"Given" is a past participle — not parallel with the active past tense verbs.

The correct form is "and was given a certificate" (passive past tense) or "and received a certificate" (active past tense).

This is precisely the MCQOrbit lesson's Example Q3 worked out in the Parallelism section — "not only...but also" with a three-part series where the third element breaks parallelism by using a past participle instead of a past tense verb.

Tense consistency is required across "not only...but also" structures.

"Did she complete" is past tense — "but she also exceeded" must also be past tense.

"Exceeds" (present tense) in option B breaks tense consistency.

Correct sentence: "Not only did she complete the project on time, but she also exceeded the quality benchmarks."

The inversion in "not only did she complete" is correctly formed — the error is exclusively the present tense "exceeds" where past tense "exceeded" is required.

Tense consistency across correlative conjunction pairs is a top-tier advanced parallel structure requirement.

"The conference aims to bring together not only leading academics from prestigious institutions but also policy makers, industry leaders, and civil society representatives" is fully correct.

"Not only...but also" correctly pairs two noun phrase groups — "leading academics from prestigious institutions" and "policy makers, industry leaders, and civil society representatives" — both are noun phrases listing people/groups.

Parallel structure is maintained across both elements.

No inversion needed — "not only" is mid-sentence after "together."

The three-item list after "but also" is grammatically correct as a parallel expansion.

No error.

"She is known not only for her exceptional contributions to medical research but also for her tireless advocacy for public health policy reform" is fully correct.

"Not only...but also" correctly pairs two prepositional phrases — "for her exceptional contributions to medical research" and "for her tireless advocacy for public health policy reform" — both beginning with "for" and containing noun phrases.

Parallel structure is perfectly maintained.

No inversion is needed because "not only" is placed mid-sentence after the subject and verb.

No error.

This No Error question uses the most formal academic-public health register to test whether advanced students can confirm correct "not only...but also" parallelism.

"Not only has the committee endorsed the proposal unanimously, but the implementation timeline has also been accelerated to ensure early delivery of the anticipated benefits" is fully correct.

"Not only" at the start requires inversion — "has the committee endorsed" correctly inverts the auxiliary.

Present perfect is maintained in both clauses ("has endorsed" / "has been accelerated").

"But the implementation timeline has also been accelerated" — different subject ("the implementation timeline") is acceptable in the second clause of "not only...but also" when the action involves a different entity.

"To ensure early delivery" is a correctly formed purpose infinitive.

No error throughout — a perfectly formed advanced "not only...but also" sentence.

With "neither...nor," the verb agrees with the subject closer to it — "the managing director" (singular) is the nearer subject.

The verb must be singular: "was informed," not "were informed."

Proximity rule: "managing director" is singular → "was."

The reverse order "Neither the managing director nor the senior partners were informed" would correctly use "were" because "the senior partners" (plural) would be the nearer subject.

The formal legal-business register (senior partners, managing director, terminate the contract) disguises the standard proximity rule — the plural "senior partners" mentioned first makes "were" feel natural, but "managing director" (singular) is the governing nearer subject.

"Both...and" creates a plural compound subject — "the research findings" and "the policy recommendations" — plural.

The verb must be plural: "have been presented," not "has been presented."

The extreme length of the subject phrase in option A — containing a relative clause ("that emerged from the three-year longitudinal study") that refers only to "policy recommendations" — is designed to make students forget the compound "both...and" subject.

"Has" (singular) in option B is wrong for the plural compound subject.

This is the most advanced form of the "both...and" + long subject + verb agreement trap.

 Option A is the most grammatically and logically precise sentence.

"She is not only an outstanding researcher but also an inspiring mentor" — "not only" is correctly placed mid-sentence after "she is," requiring no inversion.

Both elements are parallel noun phrases ("an outstanding researcher" / "an inspiring mentor").

"Who has guided countless students to academic success" is a relative clause correctly modifying "mentor."

No redundant "is" after "but also."

Option B — "not only is an outstanding researcher" — misplaces "not only" between subject and verb — wrong.

Option C — "Not only she is" — sentence-opening "not only" requires inversion ("Not only is she") — wrong.

Option D — "but also is an inspiring mentor" — redundant "is" breaks noun phrase parallelism by creating an asymmetric clause.

Only option A satisfies all five requirements simultaneously.

"The initiative aims not only at reducing carbon emissions but also at promoting renewable energy adoption across the industrial sector" is fully correct.

"Not only...but also" correctly pairs two parallel prepositional phrases — "at reducing carbon emissions" and "at promoting renewable energy adoption" — both beginning with "at" and containing gerund phrases.

The parallel structure is perfectly maintained.

"Aims at + gerund" is the standard verb-preposition collocation.

No inversion needed — "not only" is mid-sentence.

No error.

This No Error question uses the environmental-policy register to test whether advanced students can confirm correct "not only...but also" parallelism with gerund phrases.

"Not only had the organisation failed to meet its sustainability targets, but it had also neglected to report the shortfall to its stakeholders in a timely manner" is fully correct.

"Not only" at the start requires inversion — "had the organisation failed" correctly inverts the auxiliary.

Past perfect is consistently maintained across both clauses.

"But it had also neglected" — subject "it" correctly retained.

Parallel structure: both clauses are past perfect with the same subject ("the organisation" / "it"). No error.

This No Error question at the highest advanced level tests complete mastery of "not only...but also" with past perfect tense inversion — the most complex correlative conjunction structure.