Pulmonary fibrosis is a lung disease that is characterized by damage and scarring of lung tissue. This results in the lungs becoming stiff and inelastic. What function is most likely to be impaired in someone with pulmonary fibrosis?
A) contraction of the diaphragm
B) relaxation of the diaphragm
C) gas exchange at the alveoli
D) expansion of the lungs
Answer: D
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