Runoffs from an uranium mine stockpile have contaminated the surface water in a location. this might cause health problems among people in the location. which of these is the best plan to solve this problem?

a-plant trees around uranium mines to absorb contaminants
b-put fences around uranium mines to check the flow of contaminants
c- wear protective clothing for prevention against harmful effects of radiation
d-collect the runoffs in retention ponds for isolation and recovery of contaminants