Final answer:
The intrapartal period covers the onset of labor to delivery of the baby. There is one more stage called the expulsion of the placenta (afterbirth).
Step-by-step explanation:
The intrapartal period covers the onset of labor to delivery of the baby. During this period, the woman experiences contractions, the cervix dilates, and the baby is born. After delivery, there is still one more stage called the expulsion of the placenta (afterbirth) where the placenta is delivered. So the correct option is d. onset of labor to delivery of the placenta.