English grammar – Spot the error (choose the segment with the mistake; if there is no mistake, choose ‘‘No error’’). Sentence: “The committee is thankful to Shri Desai for preparing not only the main report but also for preparing the agenda notes and minutes.”

Introduction / Context:Error-spotting questions test precision in grammar and style. This sentence checks your understanding of parallelism in correlative constructions, especially “not only … but also …”. Getting the structure right avoids redundancy and maintains balance between the paired parts of a sentence.

Given Data / Assumptions:

• The sentence thanks Shri Desai for preparing several documents.
• The correlative pair used is “not only … but also …”.
• We must locate the exact segment that breaks correct parallel structure.

Concept / Approach:

• When using “not only … but also …”, the grammatical form following each part should be parallel.
• If a preposition or verb (e.g., “for preparing”) appears before “not only”, it should not be repeated after “but also” unless the first is omitted to maintain symmetry.
• Concise, non-redundant phrasing improves clarity.

Step-by-Step Solution:

Verification / Alternative check:

Why Other Options Are Wrong:

Common Pitfalls:

Final Answer: