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’.
Nobody was interested in the fish who Gopal had catch from the river.

Correct option is D

The correct substitution of the highlighted segment is (d) which Gopal had caught.
Explanation:
· The noun “fish” is non-human, so the correct relative pronoun is “which”, not “who”.
· Verb correction: “had catch” is incorrect (bare verb). It should be past participle – “had caught”.
Grammatical Rule Used:
✔ Non-human subject → use “which”
✔ Past perfect tense = had + V3 (caught)
❌ “catch” (V1) is wrong after “had”
Correct Sentence:
Nobody was interested in the fish which Gopal had caught from the river.
Example:
Wrong: The book who I had read…
Right: The book which I had read…
�� Grammar Booster:
Use “who” for people, “which” for things/animals, and “that” for both (informally).