Task: Instance Description Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes the instance 'rimming'?

A. Someone who aims to have sexual relations (in some cases non-consensually) or date a person with specific characteristics as a kind of fetish.
B. A person who is in a specific type of mutually beneficial relationship for the expressed purpose of achieving economic security.
C. An event in the process of a sexual relationship in which partners recount their current and past experiences with sexually transmitted infections (STIs).
D. The act of sexually stimulating an individual's anus with the tongue or mouth.

Answer: The act of sexually stimulating an individual's anus with the tongue or mouth.