Structures of the lower airway include all of the following EXCEPT the A) Larynx. B) Trachea. C) Pharynx. D) Alveoli.?

The structures of the lower airway include the trachea, bronchi, and alveoli, but not the larynx or pharynx. The larynx and pharynx are part of the upper airway. Therefore, the correct answer is C) Pharynx.