C. is your correct answer.
Thermal pollution is when the water temperature goes from one extreme to another whether cold to hot or hot to cold, so I would say B.
The answer to this question is D
Extrusive because it cools down and turns to rock on the outside of volcanoe/ inside earth
Potential energy
the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.