Sentence Improvement - Verbal and Reasoning

Directions to SolveIn questions given below, a part of the sentence isitalicised and underlined. Below are given alternatives to the italicised part which may improve the sentence. Choose the correct alternative. In case no improvement is needed, option 'D' is the answer.
Q1:

Most donors would seriously protest any effort to extrapolate from such limited data.

A protest against

B protest at

C protest to

D No improvement

ANS:A - protest against

No answer description is available.