Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'reproductive endocrinology'?

A. Film pertaining especially to transgender persons and/or culture.
B. A subfield that bridges oncology and reproductive research to explore and expand options for the reproductive future of cancer survivors.
C. Pleasure derived from being physically or psychologically abused, whether inflicted by oneself or by others.
D. The study of those hormones, and their actions, which affect fertility and pregnancy.

Answer: The study of those hormones, and their actions, which affect fertility and pregnancy.