C. me in sentence 3
The correct version of the sentence:
(3) Sandy was more talkative than I.
In order to have a sentence with an active voice, you need to have to have the main subject perform an action.
"The revision (subject) gives the sentence (action) an active voice."
Hope This Helps
https://byjus.com/govt-exams/direct-indirect-speech-rules/
The answer is A.The moisture of exertion