Your answer will be D if a person breaths in air paticlkes could be hazard because it is not C because sand can ruin machinery it is not B because you immigrate to a deserted area there are no resources in less you have a lot of money to pay for those resources when it came down to rather A, and D I choose D because D if a person breaths in air with any particles it could choke the person or even take that persons life!
Your answer is D.