The correct option is A Digestion of food
The functions of the large intestine are absorption of water, certain minerals from the food and the elimination of solid wastes. However, moderate quantities of vitamin K and vitamin B complex are manufactured by symbiotic bacteria present in the large intestine. These vitamins are absorbed in the large intestine. However, negligible digestion takes place in the large intestine as it does not produce any digestive enzymes. Digestion of food is usually completed in the small intestine.