Answer:
https://dit69.pro/duoc-2-em-gai-dam-lam-tinh-suong-vai-chim/
Ethos - credibility/ethics
Pathos- emotions
Logos- logic/facts/reasoning
I would say Anagnorisis. This means when a character makes a critical discovery, in this case he finds out he was sleeping with his mom and killed his father. It also means a change in what a person stood for. He stood for finding who was the killer, and cursed him, only to find out its him.
It's b :) hoped this helped!