22 what will not pollute the groundwater?
f motor oil spillage
g compost production
h injected radioactive waste
j lawn fertilizers

b

Explanation:

Compost won't pollute because it's dirt and it has no chemicals to pollute anything.

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.