The nurse understands that in the preoperative period the infant with a myelomeningocele must be placed in which of the following positions?

A. Prone and in full Trendelenburg position is not appropriate as it could increase intracranial pressure and compromise breathing. B. Supine with head slightly elevated is not suitable because it can put pressure on the myelomeningocele sac. C. Side-lying with head slightly elevated is also not ideal as it can lead to pressure on the sac. D. Prone with hips flexed and legs abducted is the best position to avoid pressure on the myelomeningocele sac, prevent trauma, and reduce the risk of infection before surgical repair.