which causes a drop in female hormone levels?\n the onset of the menstrual flow\n the release of an egg from…

which causes a drop in female hormone levels?\n the onset of the menstrual flow\n the release of an egg from the ovary\n the thickening of the uterine wall\n the failure of an egg to be fertilized

which causes a drop in female hormone levels?\n the onset of the menstrual flow\n the release of an egg from the ovary\n the thickening of the uterine wall\n the failure of an egg to be fertilized

Answer

Answer:

D. the failure of an egg to be fertilized

Brief Explanations:

When an egg is not fertilized, the corpus luteum (which produces female hormones like progesterone) degenerates, causing a drop in female - hormone levels. This triggers the start of menstruation. The onset of menstrual flow is a result of the drop in hormones, not the cause. Egg release and uterine - wall thickening are part of the normal menstrual cycle without directly causing a drop in hormone levels.