Final answer:
The endometrium is the inner lining of the uterus responsible for supporting a developing baby. It is one of the three tissue layers of the uterus, along with the myometrium and the perimetrium. The correct option is c) endometrium.
Step-by-step explanation:
The lining of the uterus that supports a developing baby is known as the endometrium. The uterus has three main layers: the perimetrium, which is the outermost epithelial layer; the myometrium, which is a thick layer of smooth muscle responsible for contractions; and the endometrium, which is the innermost layer, rich in blood vessels and mucus glands.
During a woman's menstrual cycle, the endometrium thickens in preparation for the potential implantation of an embryo, providing the necessary environment to support its development. If fertilization does not occur, the endometrium will shed, which is what happens during menstruation. The correct option is c) endometrium.