Answer:
C) circulatory-transports materials for energy
Step-by-step explanation:
Excretory system - the elimination of wastes produced by homeostasis.
Digestive system - the conversion food into energy and basic nutrients to feed the entire body.
Circulatory system - carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
Respiratory system - allows your body absorb oxygen from the air so your organs can work. It also cleans waste gases, such as carbon dioxide, from your blood.