What is one possible cause of a bowel obstruction?

The possibility of stool impaction leading to a bowel obstruction is well-founded. When fecal matter becomes hard and difficult to pass, it can accumulate in the intestines, create a blockage, and prevent normal bowel movements. This condition can result from various factors, such as dehydration, a diet low in fiber, or prolonged bed rest. In cases of impaction, the stool can fill the colon, causing severe cramping, bloating, and the potential for more serious complications if not addressed.

The other options do not align as closely with common causes of bowel obstruction. For instance, inflammation of the intestines can indeed be a contributing factor, but it typically leads to swelling and narrows the passage rather than performing as a direct blockage. Excessive fluid intake generally aids digestion and can help prevent obstructions rather than cause them. Increased physical activity is usually beneficial for digestive health and can help prevent issues such as constipation and associated blockages.