What Is the "Social Contract" in Contractarianism Theories of Ethics

Multiple Choice

What is the "social contract" in contractarianism theories of ethics?

A) A hypothetical agreement specifying the role-based obligations for different members of society.
B) A hypothetical agreement among people in an imaginary state of nature that defines the rules of morality.
C) An actual agreement that people implicitly endorse by continuing to live in a particular society.
D) An actual agreement that was signed in the distant past on which a society bases its moral rules.