त्वरित लिंक्स
English Language
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Identify the sentence that contains an error in subject-verb agreement, pronoun reference, or syntactic idiom among the following advanced structural options:
✓ Correct! Well done.
✗ Not quite — the correct answer is highlighted above.
Detailed Explanation
Option (D) contains a subject-verb agreement error. The grammatical subject of the sentence is the pronoun 'Each', which is singular and takes a singular verb ('was'), not the plural noun 'molecules' inside the prepositional modifier 'of the candidate molecules'. Furthermore, correlative structures like 'Hardly... than' in Option (C) represent a common correlative pairing error (standard English requires 'Hardly... when' or 'Scarcely... when'), but Option (D) features a textbook proximity concord violation where the plural verb 'were' incorrectly agrees with the closer noun 'molecules' instead of the true head subject 'Each'. For a deeper understanding of these structural constraints, consult the Wikipedia Reference on standard syntactic rules.
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