Which of the following hazards can severely harm a worker's lungs?
A). Heat Exposure.
Explanation:
In terms of weather/overall Heat: Inhaling hot air, induces airway constriction making it difficult to breathe. This can be especially so with people with lung conditions. It's also found that this can cause COPD and many respiratory air conditions.
In terms of fire: Of course, it's known that smoke from fire can have a terrible effect on your lungs. It can restrict oxygen flow, which can and most likely be deadly.
Why it's not the other options:
b). Vehicle Hazards: This one would most likely have no or little correlation with lung health. Also, it's not specific enough.
C). Bins and silos don't have as much effect on the lungs as Heat exposure does.
D). Excessive noise would effect mainly the ears, not lungs.