Final answer:
A multiparous client can take a warm sitz bath to help reduce postpartum pain.
Step-by-step explanation:
After delivering her infant, a multiparous client can indeed take a warm sitz bath to help reduce postpartum pain in the perineal area. This is a commonly used method to promote comfort and healing for women who have recently given birth. The warm water can improve circulation, reduce swelling, and provide relaxation. The nurse should review the use of sitz bath equipment with the client to ensure proper technique and safety.