Answer:
The answer is A. Oxytocin.
Step-by-step explanation:
Oxytocin is a hormone that is released naturally in the body at various times in a woman's life. Oxytocin is a hormone produced by the supraoptic and paraventricular nuclei of the hypothalamus that is released into the circulation through the neurohypophysis and has the property of causing uterine contractions and stimulating the rise of milk.