The correct option is D Luteinizing hormone
The
hormones FSH and LH are together called as gonadotropin hormones. They are
called the gonadotropins as they stimulate gonadal activity. The anterior pituitary
(pars distalis) releases these gonadotropic hormones. Luteinizing hormone (LH) is
a gonadotropic hormone. In males, LH is also called ICSH (interstitial
cell-stimulating hormone) which stimulates testes to synthesize and secrete
androgens (testosterone). It activates Leydig cells of the testes to secrete
testosterone. In females, LH stimulates the ovulation of the fully matured
Graafian follicles and also maintains the corpus luteum, formed from the
remnants of Graafian follicles after ovulation. The corpus luteum secretes
progesterone and some estrogen under the action of LH.