Answer to Question 1
C
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Aerosol therapy encourages spontaneous coughing. It also improves breathing and helps to raise sputum for diagnostic purposes by loosening secretions. Postural drainage is a positioning technique that promotes gravity drainage of secretions from various lobes or segments of the lungs. Aerosol therapy does not prevent lung infections. Aerosol therapy also does not produce mucus; the body continuously produces mucus.
Answer to Question 2
D
There are three essential elements of hand washing: soap, water, and friction. Of these elements, friction is the most vital.