Which is a source of land pollution heavy traffic

t's Fertilizer running off from a large agricultural farm

Explanation:

heavy traffic producing large amounts of exhaust mold growing on an indoor windowsill people smoking tobacco outside a building fertilizer running off from a large agricultural farm

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.

the correct answer is d