Which organ is primarily responsible for water absorption?

The large intestine is primarily responsible for water absorption in the digestive system. As food moves through the digestive tract, it stays in the large intestine for a considerable period, allowing for the extraction of water and electrolytes from the waste products. This process is critical in maintaining the body's fluid balance and preventing dehydration. The large intestine absorbs excess water, turning liquid waste into solid feces before it is excreted.

Other organs mentioned in the options play different roles in digestion and bodily functions. The stomach is mainly involved in the initial breakdown of food and mixing it with digestive juices but is not the primary site for water absorption. The gallbladder stores bile, which aids in the digestion of fats, while the pancreas produces enzymes for digestion and hormones such as insulin, neither of which are directly involved in the absorption of water. Therefore, the large intestine's unique structure and function make it the key player in this process.