Positioning and range-of-motion (ROM) exercises most help the immobilized patient to prevent which complication?

A. While frequent repositioning helps prevent pressure ulcers, ROM exercises specifically target joint mobility rather than skin integrity. B. ROM exercises are not primarily aimed at reducing pain, though they may help indirectly. Pain management usually involves medications and other comfort measures. C. ROM can aid circulation to some extent, but its main benefit is maintaining joint flexibility and muscle length. D. Contractures—permanent tightening of muscles, tendons, or joints—can be prevented through regular ROM exercises and proper positioning, making this the most appropriate answer.