Correct Answer: E
Explanation:
(E) To be skeptical is to feel and to express doubt about the truth of something; to be sure is to feel and express certainty.
SKEPTICAL: not easily persuaded or convinced; doubting; questioning
Indecisive: characterized by indecision; hesitating or
vacillating
Hesitant: hesitating or undecided; vacillating;
doubtful
Oblivious: forgetful or unmindful: usually with of or
to
Euphoria: feeling of vigor, well-being, or high
spirits