In the following questions, a sentence/ part of the sentence is printed in bold. Below are given alternatives to the bold sentence/part of the sentence at which may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is No Improvement.
The second pigeon flew just as the first pigeon had flown.

Options

A. No Improvement
B. one had done
C. one had flown away
D. had done

Answer

B

Explanation

The repetition of pigeon is not proper.
Hence, one had done is the right usage.