Question

menopause is the cessation of .

Explanation:

Menopause is a biological process in females, and by definition, it is the permanent cessation of menstruation (the monthly menstrual cycle). This is a key concept in the study of human biology (within Natural Science, specifically related to the reproductive system in Biology/Medicine and Health subfields), where menopause marks the end of a woman's reproductive years as the ovaries stop releasing eggs and menstrual periods stop.

Answer:

menstruation