Answer:
Option (b).
Step-by-step explanation:
The human female's reproductive and menstrual cycle is maintained by the two important hormone known as estrogen and progesterone. These hormones also involve in the development of secondary sexual characters in females.
The hormone progesterone is responsible for the maintenance of the pregnancy. The drug that mimics the progesterone will have the effects on the endometrium lining. The lady is not able to menstruate and the uterus lining become thick and supports pregnancy.
Thus, the correct answer is option (b).