Final answer:
The best example of an ethos appeal from "The Moral Logic of Survival Guilt" is option A, where the author explains Nietzsche's understanding of responsibility.
Step-by-step explanation:
An ethos appeal is an appeal to the reader's ethics, establishing authority and credibility. The best example of an ethos appeal from "The Moral Logic of Survival Guilt" is option A. The author explains Nietzsche's understanding of responsibility. By incorporating Nietzsche's ideas, the author showcases their knowledge and expertise, establishing credibility with the reader.