Question

your bodys respiratory system is made up of what body parts?
○ lungs and muscles
○ veins, muscles, and organs
○ lungs and air passages that bring oxygen to your lungs
○ heart, brain, and lungs

Explanation:

The respiratory system is mainly composed of the lungs and air - passages that bring oxygen to the lungs. The heart is part of the circulatory system, veins are blood - vessels in the circulatory system, muscles are part of the muscular system, and the brain is part of the nervous system.

Answer:

lungs and air passages that bring oxygen to your lungs