Progesterone, which is the most important component of oral contraceptive pils, prevents pregnancy by

Options

A. preventing the formation of egg
B. preventing the cleavage of the fertilised egg
C. creating unfavourable chemical environment for the sperms to survive in the famale reproductive tract
D. blocking ovulation

Answer

D

Explanation

Most contraceptive pills contain the hormones oestrogen and progesterone. Progesterone. Alongwith oestrogen, distrubs the normal menstrual cycle to prevent ovaulation. It inhibits the pituitary from secreting FSH and LH. Which leads to blocking of ovulation.