The placenta is the organ that provides the transfer of oxygen and carbon dioxide, as well as nutrients and wastes, between the mother and the fetus. It is also an endocrine gland that is only present during pregnancy. After delivery, the placenta is expelled from the mother's body as part of the afterbirth, and any hormones that were produced by the placenta fade from the mother's bloodstream.
Estrogen, Progesterone and Human chorionic gonadotropin are hormones secreted by the placenta.
Follicle-stimulating hormone (FSH) is a gonadotropin, a glycoprotein polypeptide hormone. FSH is synthesized and secreted by the gonadotropic cells of the anterior pituitary gland
FSH is the hormone not secreted by placenta
option(4) is correct