define each of the three dominant ethical theories

The purpose of this discussion is to help you investigate the ethical theories of Western philosophical thought. Prepare and post a response to the following prompt:

Identify and define each of the three dominant ethical theories in Western philosophy. Describe a situation that you have faced recently that presented an ethical dilemma. How would you evaluate your actions in this situation to determine whether or not they were good or virtuous?

Your initial post should be at least 250 words in length. Support your claims with examples from the required resources and/or other scholarly sources, and properly cite any references in APA style as outlined in the Ashford Writing Center (Links to an external site.)