Which of the following is commonly called the windpipe?

A) larynx
B) trachea
C) bronchi
D) epiglottis

Windpipe

The windpipe, also known as the trachea, is the air passage that leads from the larynx (voice box) to the bronchi, which are the major airways leading into the lungs.

Larynx

The organ located in the neck of mammals involved in breathing, producing sound, and protecting the trachea against food aspiration.

Trachea

A cartilaginous tube between the larynx and the main bronchus of the respiratory tree.