The correct option is
C Progesterone
Progesterone is a natural female hormone. It is called as the pregnancy hormone, it is essential before and during pregnancy. After ovulation occurs, the ovaries start to produce progesterone needed by the uterus. Progesterone causes the uterine lining or endometrium to thicken. This helps prepare a supportive environment in the uterus for a fertilized egg. After 8 to 10 weeks of pregnancy, the placenta takes over progesterone production from the ovaries and substantially increases progesterone production.
Therefore, the correct answer is option C.