Correct Answer:
A. Bronchiole
Inhaled air sequentially passes through the trachea, then bronchi, and finally into the smaller bronchioles before reaching the alveoli. Thus, bronchioles are the last passage among the given options.
Inhaled air sequentially passes through the trachea, then bronchi, and finally into the smaller bronchioles before reaching the alveoli. Thus, bronchioles are the last passage among the given options.