Question:

In each question, a part of the sentence is made bold. Below are given alternatives to the bold part at (A), (B), (C) and (D) which may improve the sentence. Choose the correct alternative. In case no replacement is needed, mark (E) as your answer. The committee expressed serious doubts {on the feasibility of the proposal.

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Prepositions are often fixed by convention. Memorize common collocations: you have "doubts about", not "doubts on" or "doubts over" a concept or idea.
Updated On: May 14, 2026
  • on feasibility of the proposal
  • about the feasibility of proposal
  • over feasibility of the proposal
  • about the feasibility of the proposal
  • No correction required
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The Correct Option is D

Solution and Explanation



Step 1: Understanding the Question:

We need to evaluate the prepositional phrase highlighted in the sentence and determine if another option is idiomatically and grammatically superior.


Step 3: Detailed Explanation:

The original phrase uses the preposition "on" after the noun "doubts". - Idiomatically, in standard English, one expresses "doubts about" something when questioning its truth, validity, or likelihood of success. The preposition "on" is generally incorrect in this specific context. - Let's evaluate the options containing "about": - Option (B): "about the feasibility of proposal". This option is incorrect because it is missing the definite article "the" before the specific noun "proposal". - Option (D): "about the feasibility of the proposal". This option uses the correct preposition "about" and maintains the necessary articles for both specific nouns ("the feasibility" and "the proposal").
Therefore, option (D) perfectly corrects the preposition error without introducing any new grammatical mistakes.


Step 4: Final Answer:

The correct replacement is "about the feasibility of the proposal".
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