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. Take mineral oil at bedtime: Mineral oil is not recommended for long-term use because it can interfere with absorption of fat-soluble vitamins and may lead to aspiration pneumonia, especially in older adults. Safer stool softeners or laxatives should be used for opioid-induced constipation. B. Decrease insoluble fiber intake: Insoluble fiber, such as wheat bran, helps bulk the stool and promote bowel movements. Reducing fiber intake can worsen constipation rather than relieve it, especially in clients taking opioids. C. Increase exercise activity: Regular physical activity stimulates peristalsis and helps prevent constipation. Movement is a key non-pharmacologic strategy to counteract the slowed gastrointestinal motility caused by opioids. D. Drink 1.5 L of fluids each day: Although hydration is important, adults typically require around 2 to 3 liters of fluid daily unless contraindicated. Limiting intake to 1.5 L may be insufficient to support normal bowel function and soften stool.