Answer:
Off is the preposition in this sentence.
B. because that best connects to the topic sentence while telling us the main idea of what is being said.
I believe its C. because it should show ownership.
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.
