Select the most appropriate option to substitute the highlighted segment in the given sentence. If there is no need to substitute it, select ‘no substitution required’.
She told you an interesting story, isn’t it?

Correct option is C

The correct substitution of the highlighted words is (c) didn’t she.
Explanation: The given sentence is an example of a question tag. The main clause “She told you an interesting story” is affirmative, so its question tag must be negative and use the auxiliary verb ‘did’ because the main verb is in the past simple tense (“told”). Hence, the correct tag is “didn’t she”.
Grammatical rule used:
A question tag follows this pattern:
· If the main clause is positive, the tag is negative.
· If the main clause is negative, the tag is positive.
· Example: You went there, didn’t you?
· Information booster: In tag questions, the auxiliary verb of the main clause (or ‘do/does/did’ if there is none) is repeated in the tag.