Enthusiasm
(hope this works)
This will either be power or reputation. Most likely power, with the fact that they are the accusers.
He uses D. Ethos. He wants to appeal to the ethics of the people by saying that he is trying to help. He wants to challenge their silence by saying that if he were to keep quiet he would be guilty of withholding helpful information and opinions.
Answer:
I think its "c" because persuasive information is like influence people to get something or do something
