A nurse is providing preoperative teaching to a client about promoting circulation during the postoperative period. Which of the following instructions should the nurse include?

A. “Remain on bed rest for 24 hours following the procedure.”: Prolonged bed rest increases the risk of venous stasis and deep vein thrombosis, so this instruction does not promote circulation and is not recommended. B. “Place a pillow under your knees while in bed.”: Elevating the knees can impede venous return and increase the risk of blood clots, so this practice is discouraged for circulation promotion. C. “Participate in range-of-motion exercises.”: Performing range-of-motion exercises helps stimulate blood flow, reduce venous stasis, and promote circulation, which is essential during the postoperative period to prevent complications. D. “Use an incentive spirometer every 4 hours.”: Using an incentive spirometer improves lung expansion and oxygenation but does not directly promote circulation in the extremities.