Question

select the correct answer.
which process is responsible for causing menstruation?
a. breakdown of the corpus luteum
b. fertilization of the egg
c. implantation of the egg in the endometrium
d. rupture of a follicle in the ovary
e. repair of the endometrial lining

Explanation:

Menstruation occurs when the thickened uterine lining (endometrium) is shed, which happens if fertilization does not occur. The corpus luteum, which maintains the uterine lining, breaks down when no pregnancy happens, leading to a drop in progesterone and estrogen, triggering menstruation. Fertilization and implantation prevent menstruation, follicle rupture is ovulation, and repair of the lining happens after menstruation.

Answer:

A. breakdown of the corpus luteum