【单选题】The nurse is reinforcing instructions to a client about the use of an incentive spirometer. The nurse tells the client to sustain the inhaled breath for 3 seconds. When the client asks the nurse about...
A.
Dilate the major bronchi.
B.
Increase surfactant production.
C.
Maintain inflation of the alveoli.
D.
Enhance ciliary action in the tracheobronchial tree.