A chronic pulmonary disease in which it is difficult to exhale air from the lungs is called:

A) croup.
B) emphysema.
C) empyema.
D) epistaxis.

Emphysema

A long-term, progressive lung disease characterized by shortness of breath and destruction of air sacs in the lungs, affecting their elasticity.

Pulmonary Disease

A term for diseases affecting the lungs and other parts of the respiratory system.

Exhale

To breathe out; the process of releasing air from the lungs.