Question

why can exercising outdoors be a particularly dangerous time for your lungs?
a. during exercise, you take in up to two to three times the amount of air that you normally breathe, which overloads your muscles with oxygen, causing cramps.
b. during exercise, you take in up to two to three times the amount of air that you normally breathe, which can make you light - headed, increasing your risk of falling and hurting yourself.
c. during exercise, you take in up to two to three times the amount of air that you normally breathe, which also means you inhale more pollutants.
d. during exercise, you take in up to two to three times the normal amount of air that you would breathe during that time period which can give you a migraine headache.

Explanation:

When exercising outdoors, increased air - intake means more pollutants are inhaled, which is dangerous for lungs. Option A is wrong as over - oxygenation doesn't cause muscle cramps. Option B focuses on light - headedness and falling risk, not lung danger. Option D links increased air intake to migraines, not lung issues.

Answer:

C. During exercise, you take in up to two to three times the amount of air that you normally breathe, which also means you inhale more pollutants.