One year after being discharged from the burn trauma unit, a client with a history of 40% full-thickness burns is admitted with bone pain and muscle weakness. Which intervention should the nurse include in this client's plan of care?

A. Encourage progressive active range of motion: Range of motion exercises are important in burn rehabilitation, but they do not directly address the underlying cause of bone pain and muscle weakness one year post-injury. B. Explain the need for skin exposure to sunlight without sunscreen: While sunlight helps in vitamin D synthesis, advising exposure without sunscreen can increase the risk of skin damage or cancer, particularly in someone with burn scars and sensitive skin. C. Teach the need for dietary and supplemental vitamin D: Clients with extensive burns are at risk for long-term vitamin D deficiency due to impaired synthesis in damaged skin, leading to bone pain and muscle weakness. Supplementation is essential for bone health and recovery. D. Instruct the client in the use of muscle strengthening exercises: Muscle strengthening may support recovery, but addressing the vitamin D deficiency causing bone and muscle symptoms is the priority intervention.