Question

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what is the role of the respiratory system in the body?
a it regulates the bodys temperature.
b it only helps with breathing.
c it helps in the digestion of food.
d it provides oxygen to the body cells and removes waste products.

Explanation:

The respiratory system's main function is gas - exchange. It takes in oxygen from the air and supplies it to body cells while removing carbon - dioxide (a waste product) produced by cells. Regulating body temperature is mainly the role of the integumentary system, digestion is for the digestive system, and breathing is just a part of the respiratory system's function.

Answer:

D. It provides oxygen to the body cells and removes waste products.