[IB Biology SL at GHS: Human Reproduction]

9. Name of hormone that prepares the uterine lining by thickening it prior to any implantation of a fertilized egg.

A) Estrogen

B) Progesterone

C) Luteinizing Hormone (LH)

D) Follicle Stimulating Hormone (FSH)

------ [Answer] ------

Slichter