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A decrease in the level of oestrogen and progesterone causes 

(a) Growth and dilation of myometrium 

(b) Growth of endometrium 

(c) Constriction of uterine blood vessels leading to sloughing of endometrium or uterine epithelium 

(d) Release of ovum from the ovary

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Best answer

Correct option:(c) Constriction of uterine blood vessels leading to sloughing of endometrium or uterine epithelium

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