D is the correct answer.
The Statute of Frauds is the legal requirement that some agreements are only valid if they are put into writing where both sides have a mutual understanding about what is agreed upon.
The answer to the missing word in the statement is letter C. The branch of ethical theory that considers the origin and meaning of ethical principles is known as meta ethics. It makes us questions how we understand, what we know and what we mean especially with what is wrong or what is right.
Culture is the answer! Hope this helps!:))