A nurse is contributing to the plan of care for a client who has urolithiasis. Which of the following interventions should the nurse include in the plan?

A. Encourage the client to drink 3 L of fluids per day: High fluid intake is a cornerstone of urolithiasis management because it increases urine volume and helps dilute minerals that form stones. Adequate hydration promotes stone passage and reduces the risk of stone enlargement or recurrence. B. Provide the client a high protein diet: High-protein diets increase calcium and uric acid excretion while lowering urinary citrate, all of which promote stone formation. Clients with urolithiasis are usually advised to moderate protein intake rather than increase it. C. Tell the client to expect a decrease in urine output: Decreased urine output increases urinary concentration, which can worsen stone formation and obstruction. The goal of care is to increase urine output, not reduce it. D. Maintain the client on bed rest: Bed rest does not aid in stone passage and may actually slow mobility-related benefits such as gravitational movement of stones. Ambulation is generally encouraged unless contraindicated.