B, you need to give the reader basically a reason to read it so you give the hook and the topic of the sentence so basically what the story is going to be about.
Answer:
I do not know about your chapter or story but i am guessing he's the hero ,protagonist or some kind of main character
Explanation:
Sorry what book if its greek mythology i totally can help:)
do you mean the letters? If so what do you need the topic scentence to be about