D.
This is because if you’re in high air polluted areas your lungs could be affected.
If you exercise in heat you’re more likely to have a heat stroke or pass out, which are both dangerous.
If equipment is made for something specific, using it wrong could result in physical injury.
Explanation:
everything can be found in the picture above. hope it helps.
Answer:
B. rapid breathing (it's making me but 20 characters so ignore this lol)