Final answer:
The client most at risk for hemorrhage is the multiparous client who had a cesarean section delivery, due to the invasive surgical nature of the procedure and its associated complications.
Step-by-step explanation:
Assessing Risk for Hemorrhage in Postpartum Clients
The client at the highest risk for hemorrhage is B) A multiparous client who had a cesarean section delivery. Cesarean deliveries involve a surgical incision in the mother's abdomen and uterus, posing a greater risk of hemorrhage due to potential complications associated with the surgery, such as infection and increased blood loss. In comparison, primiparous clients delivering without interventions (Option A), clients with hypertension delivering preterm babies (Option C), and multiparous clients delivering large babies induced with Pitocin (Option D) may also have risks, but generally, the invasive nature of a cesarean section represents a higher risk for postpartum hemorrhage.