What does the large intestine primarily do?

The large intestine primarily functions to absorb water and prepare waste for excretion, making this answer correct. As food passes through the gastrointestinal tract, much of the nutrients and water are absorbed in the small intestine. By the time the remaining material reaches the large intestine, its role shifts to reabsorbing water and electrolytes, which helps to form solid waste. The large intestine also harbors bacteria that assist in the fermentation of indigestible materials, contributing to the final consistency of feces.

While absorption of nutrients occurs in the digestive system, the primary responsibility for this process lies mainly with the small intestine, which is specifically designed for nutrient absorption. Digestive enzymes are indeed involved in breaking down food, but the large intestine does not primarily engage in this activity. Additionally, food is not stored in the large intestine; instead, it moves from the small intestine into the large intestine as part of the digestive process. Thus, the function of the large intestine is best encapsulated by its role in water absorption and waste preparation.