Which of the following is a potential cause of fecal impaction?

Inadequate fluid intake is indeed a potential cause of fecal impaction. Proper hydration is essential for maintaining normal bowel function. When a person does not consume enough fluids, the body draws water from the stool in the intestines to maintain hydration, leading to hard, dry stools that are difficult to pass. This can result in constipation and, over time, can build up and lead to fecal impaction, where stool becomes tightly packed and obstructs the bowel.

In contrast, excessive fiber intake, while generally beneficial for digestion, can lead to issues if not accompanied by adequate hydration. High physical activity typically promotes regular bowel movements, and excessive hydration would help prevent fecal impaction, as it keeps the stool soft and easier to pass. Thus, inadequate fluid intake becomes a key factor in the development of this condition.