Question

Progesterone reaches its peak about_______ day after the beginning of menstrual cycle.

• A. $5^{th}$
• B. ${22}^{nd}$
• C. ${14}^{th}$
• D. $7^{th}$

Answer 1

The correct option is B ${22}^{nd}$

According to the given chart of hormone regulation in the menstrual cycle, the progesterone level peaks at the 22nd day. So, the correct option is '22nd'.