Progestin- estradiol combined contracept...

Progestin- estradiol combined contraceptive pills inhibit ovulation by:

negative feedback on the release of estrogen, from ovary required for follicular development in follicular phase.

preventing the uterine physiological and morphological changes required for implantation.

inhibiting the secretion of FSH and LH that are necessary for ovulation.

both (A) and (C)

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