Respuesta :
Both oxytocin and prolactin are directly involved in lactation. Prolactin is the hormone that is involved in milk production by the alveoli where oxytocin is known as the "let down" hormone that allows milk to flow.
Answer:
C. Prolactin
"Prolactin. Prolactin is necessary for the secretion of milk by the cells of the alveoli. The level of prolactin in the blood increases markedly during pregnancy, and stimulates the growth and development of the mammary tissue, in preparation for the production of milk."