Why are older adults at increased risk for respiratory infections?
A) The diaphragm and intercostal muscles become weaker with age.
B) Many older adults spend a lot of time with their grandchildren, who are often sick with respiratory infections.
C) With age, the elastic lung tissue of the lungs stretches, increasing the amount of air that is taken in and let out with each breath.
D) Older adults are more likely to be smokers.
Correct Answer:
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