Which word means uncertain?

• A. Abstain
• B. Apply
• C. Ambivalent
• D. Audible

Answer: (C)

Ambivalent describes having mixed feelings or being torn about a decision, which is exactly what uncertainty conveys. When someone feels ambivalent, they’re not firmly on one side; they can be unsure because they see both pros and cons or because their feelings conflict. That sense of unsettled or undecided thinking is what the word captures.

Think of how abstain, apply, or audible differ: abstain means to refrain from doing something, a definite choice to hold back; apply means to put to use or to request something, a concrete action or process; audible means capable of being heard, related to sound. None of these convey the uncertainty or mixed feelings implied by ambivalent, making it the best match for expressing being unsure.