allery**Ovulation** in a normal 28-day menstrual cycle is triggered by a sudden surge of:
AFSH
BLH
CEstrogen
DProgesterone
Answer & Solution
Correct answer: B. LH
On day 14, a rapid LH surge — triggered by the positive-feedback action of high estrogen — causes the mature Graafian follicle to rupture and release the secondary oocyte.
FSH governs follicle growth
estrogen rebuilds endometrium
progesterone dominates the luteal phase.
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