Students were engaged in an argument about major body system interactions that facilitate homeostasis in humans. They discussed that when an individual has a common cold, at least two major human body systems interact more to maintain homeostasis. Which student has the best argument regarding body system interactions that most directly relate to an individual returning to a state of feeling healthier? A.
Student A argued that the nervous system regulates the immune system and the excretory system eliminates waste from the body.

B.
Student B argued that the cardiovascular system returns oxygen-poor blood back to the lungs to be released, and the digestive system breaks down food into usable nutrients.

C.
Student C argued that the immune system fights infections and the cardiovascular system transports white blood cells in the blood.

D.
Student D argued that the muscular system supports movement of the body, while the respiratory system takes in oxygen needed for the blood cells.