Spent is the most negative connotation.
Explanation:
Fatigued is to feel exauhsted.
Weary is lack of sleep, tiredness.
Tired is just a minimal drousy feeling.
And spent is as if your energy was all used up, consumed.
Answer:
He had limited success because he was a generally nice person without a surplus of ego and because he wasn't flashy.
The answer to you're question is D
