An occupational health nurse is providing teaching to a group of factory workers about proper lifting techniques. Which of the following statements should the nurse make?

A. "Keep your feet together to provide a tight base of support": Incorrect. Keeping feet together reduces stability; a wide base of support is recommended. B. "Keep objects away from your center of gravity while lifting": Incorrect. Objects should be kept close to the center of gravity to reduce strain. C. "Bend at the waist when lifting objects from the floor": Incorrect. Bending at the knees, not the waist, is the correct technique to prevent back injury. D. "Tighten abdominal muscles to improve balance": Tightening the abdominal muscles provides core stability and reduces the risk of injury when lifting.