D. provision of emergency services to injured victims at the accident scene.
The three main functions of the human digestive system are to break food down into chyme for the body's use, to secrete and absorb nutrients and bodily fluids into the gastrointestinal tract or the blood, and to store and eliminate waste. The digestive system has major parts and accessory parts.
I believe the answer is C.
third one, all of the above
