Answer : The correct answer for the blank is -
Chyme entering the large intestine usually consists of material, which is not digested or absorbed in the small intestine.
The most important function of the large intestine is to absorb certain electrolytes and water from the indigestible food material (that enters the large intestine from small intestine) and transmit the undigested, useless waste in the form of faeces out of the body (through anus).