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. Placing a pillow under the knees can restrict circulation and increase clot risk. B. Incentive spirometry prevents atelectasis and promotes lung expansion, but it does not directly promote circulation. C. Bed rest should be minimized to prevent DVT and improve circulation. D. Range-of-motion exercises help prevent venous stasis, reducing the risk of deep vein thrombosis (DVT).