A nurse is positioning a client for a cesarean birth. To prevent a compromise in placental blood flow during the intraoperative period, which of the following actions should the nurse take?

A. Correct – Placing a wedge under one hip reduces compression of the inferior vena cava, preventing hypotension and impaired placental perfusion. B. Incorrect – A pillow under the knees does not address vena cava compression. C. Incorrect – The lithotomy position is used for vaginal birth, not a C-section. D. Incorrect – Reverse Trendelenburg does not specifically improve placental blood flow.