Progesterone, the component of the oral contraceptive pills,

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Progesterone, the component of the oral contraceptive pills, prevents pregnancy by

1. preventing the cleavage of the fertilized egg
2. preventing the formation of ova
3. blocking ovulation
4. creating unfavourable chemical environment for the sperms to survive in the female reproductive tract

Correct Option: C

Contraceptive pills have estrogen and progesterone. Progesterone suppresses ovulation and production of LH while estrogen suppresses the production of FSH.