Peyton and Vanessa are having an in-depth conversation about whether moral standards and concepts hold across cultures, or whether they are relative. What type of ethics are they considering?

Moral Relativism

Explanation:

It is often thought that relativism in ethics is warranted by the vast difference in moral opinions in a society. Moral relativism is a metaphysical thesis, that is, it is a statement about reality, about how things are. For relativism, there are no universal standards or absolute truths. Infanticide, for example, can be accepted in some cultures and rejected by others without any way of determining whether this act is in itself morally permissible or wrong.

How Peyton and Vanessa are having an in-depth conversation about whether moral standards and concepts hold across cultures or are relative. We can say that they are arguing within the concepts of moral relativism.

Um ... This is not exactly physics ... (Although, this school of thought is most likely Moral Relativism.)