Answer:
They add sulfur oxide to the atmosphere causing acidic rain.
Explanation:
At combustion , they release pollutants like sulfur and Nitrogen oxides to the atmosphere which contributes to the formation of acidic rain and smog among other negative consequences.
Protons along with electrons and neutrons are the building blocks of atoms. One can obtain a proton by stripping an electron from a hydrogen atom because hydrogen consists of one proton and one electron. ... At Fermilab, we take hydrogen and add an extra electron.
I would say its between A and D, Hope it helps.