Questions: Which of the following would decrease FSH secretion? a) Low levels of androgens b) Low levels of estrogen c) High levels of GnRH secretion d) High levels of androgens

The answer is the fourth one (d): High levels of androgens.

Explanation for each option: a) Low levels of androgens: This would not decrease FSH secretion. In fact, low levels of androgens might lead to an increase in FSH secretion as the body attempts to stimulate the production of more androgens.

b) Low levels of estrogen: This would also not decrease FSH secretion. Low levels of estrogen typically result in increased FSH secretion as the body tries to stimulate the ovaries to produce more estrogen.

c) High levels of GnRH secretion: High levels of GnRH (Gonadotropin-releasing hormone) would actually increase the secretion of FSH (Follicle-stimulating hormone) and LH (Luteinizing hormone) from the anterior pituitary gland.

d) High levels of androgens: High levels of androgens can exert negative feedback on the hypothalamus and pituitary gland, leading to a decrease in the secretion of GnRH and subsequently a decrease in FSH secretion.

Summary: High levels of androgens would decrease FSH secretion due to the negative feedback mechanism on the hypothalamus and pituitary gland.