Answer:
I believe it is sincere.
Explanation: process of elimination
It doesn't sound bleak or bitter and I'm pretty sure it's not matter-of-fact. I could be wrong.
Answer:
The author may use words in detail that show personality feeling,and thought.
Explanation:
The author may use this-
Ava was always competitive and persistent in what she was doing.
This sentence can help you make an inference on how you think Ava acts just by reading this sentence.
B. One of your troop members began to cry.
It doesn't explain why he is crying, and is the most suspenseful, but one could argue it was C, because they could have going the wrong direction, but B is the most suspenseful due to the crying and emotion in it.
Hope this helps, even though I just debated aloud.