The respiratory movement representing the total amount of exchangeable air is the

Air goes past the epiglottis and into the trachea when you breathe in. from there, it goes to your vocal cords in the larynx until it reaches the bronchi. from the bronchi, air passes into each lung.

If the line intersect than it would should how a perpendicular works.

Your answer is b. centers of disease control and prevention. the description is in the name of the agency. : )