A nurse is teaching an older adult client who reports constipation. Which of the following instructions should the nurse include in the teaching?

A. Limiting activity can contribute to constipation, so the nurse should encourage regular physical activity to promote bowel function. B. Drinking four to five glasses of water daily is insufficient; older adults typically need at least 6-8 glasses to help prevent constipation. C. Increasing dietary intake of raw vegetables provides fiber, which is essential for promoting bowel regularity and preventing constipation. This recommendation aligns with dietary guidelines for improving gastrointestinal health. D. Bearing down hard when defecating can lead to complications such as hemorrhoids or valsalva maneuvers, so clients should be taught to relax and allow for a natural bowel movement instead.