Which structure primarily absorbs water and electrolytes in the digestive system?

The large intestine is primarily responsible for absorbing water and electrolytes in the digestive system. As food passes through the digestive tract, particularly in the small intestine, most nutrients are absorbed. However, once the remaining waste reaches the large intestine, the primary focus shifts to reclaiming water and electrolytes such as sodium and potassium. This absorption process is crucial as it helps maintain body hydration and electrolyte balance.

The large intestine also forms and stores feces, enabling waste to be excreted from the body. While the small intestine does absorb some water and electrolytes, its main role is in the digestion and absorption of nutrients. The stomach mainly functions in food digestion and does not play a significant role in absorption. Meanwhile, the esophagus is merely a passageway for food, lacking the necessary structures for absorption. Hence, the large intestine's role in absorbing water and electrolytes makes it the correct answer.