Answer:
C- The digestive system breaks down food and the circulatory system transports nutrients to cells.
Not the answer:
A. Nervous system is the center of all mental activity not for senses.
B. Muscular system permits movement of the body, maintains posture and circulates blood throughout the body not breaks down food (digestive system does)
D. Circulatory System permits blood to circulate and transport nutrients and etc. not absorbs food.