A client who is obese reports severe pain and inability to bear weight in the right knee after making dietary changes 3 weeks ago for weight loss. The client's medical history includes hypertension, gouty arthritis, and cholecystitis. Which instruction should the nurse include in the discharge teaching?

A. Use electric heating pad when pain is at its worse: Heat can help relieve stiffness in arthritis, but during acute gout flares, applying heat may exacerbate inflammation. Cold therapy is generally recommended during severe joint pain episodes. B. Increase fluid intake to 2000 mL per day: Adequate hydration helps prevent uric acid crystal formation, which can reduce the frequency and severity of gout attacks. Encouraging increased fluid intake is an important part of long-term management in clients with gouty arthritis. C. Exercise daily for at least 30 minutes: While regular exercise supports weight loss and overall joint health, exercising during an acute flare can worsen pain and potentially injure the affected joint. Activity should be resumed gradually once inflammation subsides. D. Eat high protein foods to achieve ideal body weight: High-protein diets, especially those rich in purines (e.g., red meat, organ meats), can exacerbate gout. Discharge teaching should focus on balanced nutrition with attention to foods that minimize uric acid levels.