Answer:
D Earth's hot interior
Explanation:
The internal heat engine of the earth is the energy source that powers plate movement.
The sun drives the surface process and provides energy for the external heat engine
- The earth's interior sources it heat from:
- decays of radioactive isotopes
- remnant heat from the formation of the earth
- frictional heating from the movement of the earth
Therefore, the heat is used to melt rocks and set up convection currents that drives plate movements.
