The correct option is
B Bronchioles
- The bronchi (or bronchus) are the air passages into the lungs that begin at the end of the trachea.
- There are two bronchi, one for each lung.
- The bronchus divides into smaller branches known as segmental bronchi, which divide again into bronchioles, Hence, Bronchi divide into bronchioles.
So, the correct answer is 'bronchioles'.