What is the digestive system?
a. the body's blood-transporting system
b. the body's system for gas exhange
c. the body's food-processing system
d. the body's system of nerves

c; the body's food-processing system

Explanation:

The digestive system is the group of organs that break down food in order to absorb its nutrients. The nutrients in food are used by the body as fuel to keep all the body systems working.

Hope this helps :)

your answer would be a, maximum exploitation of resources.