Answer:
E. All of the preceding are correct
Explanation:
When the corpus luteum stops secreting progesterone and estrogen, the
Concentration of these hormones in the blood drops.
As a result, small arteries in the endometrium contract, reducing
the oxygen supply. Menstruation, which marks the beginning
of a new cycle, begins when cells die (due to the lack of oxygen) and blood vessels break and bleed. Estrogen concentrations and
Progesterone are now too low to inhibit the anterior pituitary,
so the secretion of HSF and HL grows again.
