Which of the following contraceptive methods inhibit ovulation?

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Oral contraceptive pills and tubectomy

Lactational amenorrhea and oral contraceptive pills

Barrier methods and surgical methods

Copper releasing IUDs and non-medicated IUDs

answer is B.

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Detailed Solution

In lactational amenorrhoea, high levels of prolactin inhibit the secretion of GnRH and thereby LH due to which ovulation does not occur. Oral contraceptive pills also inhibit ovulation. In addition they inhibit implantation as well as alter the quality of cervical mucus to prevent/retard entry of sperms.

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