Question

which of these anatomical structures is part of the upper respiratory system? larynx trachea alveoli

Explanation:

The upper respiratory system includes structures like the nose, pharynx, larynx, etc. The larynx is part of the upper respiratory system. The trachea is part of the lower respiratory system (along with bronchi and lungs), and alveoli are in the lungs (lower respiratory system).

Answer:

larynx