The function of the respiratory system is to supply the body with oxygen and eliminate carbon dioxide. The correct option is B.
What is the respiratory system?
The respiratory system is the system that supplies air to the lungs, where oxygen is got absorbed and the waste air with carbon dioxide is removed from the body.
Oxygen is a gas that is needed by the body for breaking down food material and releasing energy. Carbon dioxide is unuseful gas that is removed from the body.
The first step of respiration is breathing, in which we consume air, and the last is expelling out the waste air from the body. It helps in getting oxygen to the body.
Thus, the correct option is B. to supply the body with oxygen and eliminate carbon dioxide.
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