Which part of the digestive system is responsible for absorbing water and electrolytes?

• A. Stomach
• B. Colon
• C. Small intestine
• D. Duodenum

Answer: (B)

The colon, or large intestine, plays a crucial role in the absorption of water and electrolytes during the digestive process. As the contents of the digestive system travel through the intestines, they undergo various transformations. In the colon, the remaining undigested material, primarily waste products, is further processed. The colon reabsorbs water and electrolytes such as sodium and potassium, which helps to consolidate the waste into a more solid form for elimination.

This function is essential for maintaining the body’s fluid and electrolyte balance. By absorbing these components effectively, the colon prevents excessive fluid loss and helps regulate hydration levels in the body. The other parts of the digestive system, while they have their respective roles—such as the stomach's digestive processes and the small intestine's nutrient absorption—are not primarily responsible for significant water and electrolyte absorption like the colon is.