I don't have the text but go to were it saies that and read around it
It should be habits, physical features, and conduct. Authors will not explicitly describe their conversation, or characters as protagonists - they simply write them as such. Hope that helped!
Answer:
You didn't give context but, I believe it's most likely D. He knows that his school is dangerous and that his fellow enslaved people are brave to attend
Explanation:
Hope I could help