Answer:
6th grade actually. and I experienced it all the way till high school till I learned to love myself in many ways thanks to christ :)
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.
The subject would be "A gorilla family", the predicate would be "ate all of the nuts and berries", and "ate" would be the verb.