Final answer:
Hysterotomy, also known as a cesarean section, is performed during labor and delivery if there are complications or risks to the mother or baby that prevent a vaginal delivery.
Step-by-step explanation:
The correct answer is 3) During labor and delivery. Hysterotomy, also known as a cesarean section, is a surgical procedure in which an incision is made in the abdomen and uterus to deliver the baby. It is typically performed during labor and delivery if there are complications or risks to the mother or baby that prevent a vaginal delivery. Some examples of situations where hysterotomy may be necessary include placenta previa, fetal distress, or certain maternal health conditions.