What is the term used for the delivery of the placenta?

The term for the delivery of the placenta is indeed "placental delivery." This process occurs after the baby is born and marks the third stage of labor. During placental delivery, the placenta detaches from the uterine wall and is expelled from the mother's body. This stage is crucial for the completion of the childbirth process, as it ensures that all placental tissues are expelled to prevent complications such as postpartum hemorrhage or infection.

The other terms mentioned in the options refer to different aspects or stages of childbirth. The first stage of labor involves the onset of contractions and the dilation of the cervix, while the embryonic stage refers to the early development of the embryo prior to becoming a fetus. The postpartum stage occurs after the delivery of both the baby and the placenta and involves the recovery of the mother following childbirth. Understanding these distinctions highlights why "placental delivery" is the correct term in this context.