Answer:
cultural relativism.
Explanation:
If Mr. Swanson, a college professor, says that there is no such thing as right and wrong and treats questions regarding what is good and evil as relative to an individual’s values and culture, this is an example of the theory of cultural relativism.
Cultural relativism is a theory that suggests that moral principle and practice varies among cultures. That is what is morally wrong here may be morally acceptable in another clime. For example, homosexuality is morality acceptable in the Western world but in majority of African countries it is morally not acceptable and there are punishment for it in some countries.