Select the most appropriate option that can substitute the highlighted segment in the given sentence. If there is no need to substitute it, select ‘No substitution’.
Swetha seldom waters the plants, isn’t it?

Correct option is A

The correct substitution for the highlighted words "isn’t it" is "does she." The question tag should match the verb 'seldom waters' (present simple) and flip the positive sentence into a negative tag.
· In English, tag questions are formed by mirroring the auxiliary verb of the sentence and changing its polarity; since 'seldom' implies a negative, the tag becomes positive.
· Grammatical rule used: Positive to negative polarity switch in tag questions. Example: She rarely eats out, does she?