Which of the following is NOT a mechanism of action of combination oral contraceptive pills?
AAlteration of cervical mucus quality to retard sperm entry
BInhibition of implantation
CInhibition of ovulation
DPermanent destruction of follicles in the ovary
Answer & Solution
Correct answer: D. Permanent destruction of follicles in the ovary
Pills act via **three reversible mechanisms**: inhibit ovulation, inhibit implantation, and alter cervical mucus. They do **not** destroy follicles — the action is reversible on discontinuation.
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