Of the Following Explanations, Which Most Accurately Captures the Explanation

Of the following explanations, which most accurately captures the explanation of the idea of sex that Estes employs in this paper?

A) Sex means the vast range of possible interactions and relationships between people that arouse and satisfy someone's sex drive.
B) Sex means penetrative sex but not activities such as petting or hula-hooping in a tub of green Jell-O with a stranger.
C) Sex means sexual interactions in which there exist reciprocal consent, concern, and desire on the part of all partners involved.
D) Sex means sexual activities that are mutually satisfying and contribute to the moral positive growth of all partners involved.