A nurse is teaching a client who has chronic pain about avoiding constipation from opioid medications. Which of the following information should the nurse include in the teaching?

Rationale: A. Decrease insoluble fiber intake: Decreasing fiber intake worsens constipation, especially in clients taking opioids. Instead, a diet rich in fiber from fruits, vegetables, and whole grains helps promote regular bowel movements and reduces the risk of opioid-induced constipation. B. Increase exercise activity: Physical activity stimulates intestinal motility, helping prevent constipation. Encouraging the client to engage in regular, safe exercise supports bowel function and complements dietary and hydration strategies to manage opioid-related constipation. C. Drink 1.5 L of fluids each day: Adequate fluid intake is important for softening stool, but 1.5 L may be insufficient for some clients. Fluid recommendations are typically individualized, and increasing activity has a more direct effect on bowel motility when combined with adequate hydration. D. Take mineral oil at bedtime: Routine use of mineral oil is generally not recommended because it can interfere with the absorption of fat-soluble vitamins and may cause aspiration if taken orally. Safer alternatives include stool softeners or osmotic laxatives under provider guidance.