Select the most appropriate option to improve the highlighted segment in the given sentence. If there is no need to improve it, select ‘No improvement required’.
Whoever performs exceptionally well he will be promoted immediately.

Correct option is A

The correct answer is (a) will be.
Explanation:
The subject “whoever performs exceptionally well” is already complete and does not require a second subject "he".
The sentence has a redundant pronoun, which must be removed.
Hence, the correct sentence is:
Whoever performs exceptionally well will be promoted immediately.
Grammatical Rule Used:
A relative pronoun such as “whoever” already acts as the subject of the clause.
Do not repeat the subject with another pronoun.
Example:
· Incorrect: Whoever comes early he will get a reward.
· Correct: Whoever comes early will get a reward.
Incorrect options:
· (b) “he should be” – same redundancy
· (c) No improvement – keeps the grammatical error
· (d) “he would be” – same redundancy and incorrect form in this context