If an egg is not fertilized after being released from the ovary, here's what happens:
1. It is shed from the uterus during menstruation: If the egg is not fertilized by a sperm, the thickened lining of the uterus (endometrium) that was prepared to nourish a fertilized egg will be shed during menstruation. This shedding of the uterine lining, along with the unfertilized egg, is expelled from the body through the vagina as menstrual blood.
So, the correct option is:
- It is shed from the uterus during menstruation.