In the body, system X takes in and breaks down food. System Y then transports the raw materials throughout the body. What systems do X and Y represent?
A.
System X is the digestive system and system Y is the circulatory system.
B.
System X is the excretory system and system Y is the nervous system.
C.
System X is the digestive system and system Y is the respiratory system.
D.
System X is the respiratory system and system Y is the circulatory system.