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

Which of the following definitions best describes the instance 'gang bang'?

A. An event in the process of a sexual relationship in which partners recount their current and past experiences with sexually transmitted infections (STIs).
B. A rule in some non-monogamous relationships which only permits other sexual or intimate experiences when the individual partners are more than 100 miles (161 km) apart from one another.
C. An experience following a sexual, typically sadomasochistic (SM) scene, which involves extreme drops in adrenaline and/or endorphin levels. the instance can manifest with a series of emotional responses, including intense anger or sadness.
D. A sexual activity in which one person is the central focus of the sexual activity of several people, usually more than three, sequentially or simultaneously.

Answer: A sexual activity in which one person is the central focus of the sexual activity of several people, usually more than three, sequentially or simultaneously.