A nurse is caring for a client who has COPD. Which of the following actions should the nurse take?

A. Instruct the client to cough every 4 hr: While coughing helps clear secretions, clients with COPD should be encouraged to perform effective coughing or huff coughing as needed rather than on a strict schedule. B. Advise the client to lie down after eating: Lying down after meals can worsen dyspnea in clients with COPD due to abdominal pressure on the diaphragm. Clients should be encouraged to remain upright to facilitate lung expansion and reduce breathlessness. C. Provide the client with a low protein diet: COPD increases energy expenditure, and adequate protein is essential for maintaining muscle mass and respiratory function. A low-protein diet is not recommended; a balanced diet with sufficient protein is preferred. D. Encourage the client to drink 8 glasses of water a day: Adequate hydration helps thin mucus, making it easier to expectorate and reducing airway obstruction. Encouraging the client to maintain fluid intake supports airway clearance and respiratory function.