“Taciturn” means quiet, reserved, and not talkative.
The synonym “reserved” means not openly expressing thoughts or emotions.
Incorrect options:
- (B) “Talkative” is the opposite of taciturn.
- (C) “Diplomatic” means tactful or skilled in dealing with people.
- (D) “Obstinate” means stubborn, which is unrelated to taciturn.
Thus, the correct answer is Option A.