If erosion is process that picks up sediments, then is the process that puts the sediments back down again.

Deposition

Explanation:

If erosion is process that picks up sediments, then deposition is the process that puts the sediments back down again.

(Another word for deposition is accretion, but deposition is the more commonly used term.)

Hope this helps! :)

a and b because with the other three, they simplify to something else.

these include the fossil fuels, oil, natural gas, and coal and nuclear energy. hope this ! ^.^

-ella