Billy started to smoke when he was in high school and was diagnosed with respiratory disease 10 years later.which of the following best friend describes Billy?
a.he is underweight
b.he doesn't tire easily
c.he gets 8 hours of resful sleep
d.he can do vigorous activities without experiencing shortness of breath.
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Answer:
D.
Explanation:
He can di vigorous activities without exppleriencing shortness of breath.