Ethics refers to the

A. religious tenets of a country or ethnic region that shape its culture.

B. social norms of a nation, community, or family.

C. society's values and standards that are enforceable in the courts.

D. moral principles and values that govern the actions and decisions of an individual or group.

E. universal laws of man that go beyond individual or a group's beliefs of nations or religions.

D, moral principles and values

Explanation:

Ethics resolves questions of human morality, especially the ones associated with the right/wrong questions. Every individual has its own set of ethics consisting of the individual's moral principles and values that determine their behavior, judgement and actions.

Ethics can also govern the action of a group, the group shares the same moral standards and behaves in a certain, previously accepted way.

The word ethics comes from Greek where it means 'relating to one's character'.