Final answer:
Corpus luteum regression is a normal part of the menstrual cycle if pregnancy does not occur. Premature ovarian failure can lead to the regression of the corpus luteum.
Step-by-step explanation:
Corpus luteum regression is a process where the corpus luteum, which is the endocrine tissue that develops from an ovarian follicle after ovulation, starts to break down and disappear. It is a normal part of the menstrual cycle if pregnancy does not occur. However, if pregnancy does occur, the corpus luteum continues to produce progesterone and estrogen to support the pregnancy.
Out of the given options, the correct answer for the reproduction problem of corpus luteum regression is D) Premature ovarian failure. Premature ovarian failure refers to the loss of ovarian function before the age of 40. It can result in a lack of ovulation and the subsequent regression of the corpus luteum.