The theory of ethical relativism

Define the theory of ethical relativism, and give an example of the theory (from the book; chapter text or narratives)

Explain at least 1 problem with the theory (out of the list of "6 problems").

In your view, is ethical relativism a theory that we can use as a moral guideline when dealing with other cultures? Why or why not?

The only source you can use is, "The Moral of the Story: An Introduction to Ethics" 9th Edition by Nina Rosenstand.