Which Event Occurs During the Luteal Phase of the Menstrual

Question

Which event occurs during the luteal phase of the menstrual cycle?  
A) The corpus luteum forms.
B) A zona pellucida forms around the oocyte.
C) An oocyte completes meiosis I.
D) Estrogen levels increase.
E) Testosterone levels increase.

Accepted Answer

The corpus luteum forms during the luteal phase of the menstrual cycle. It is formed from the ruptured ovarian follicle after ovulation and secretes progesterone to prepare the uterus for possible implantation of a fertilized egg.