Why Is Heat the Most Important Form of Energy Transfer

Why is heat the most important form of energy transfer for geologic processes?

A) Heat from the Sun fuels Earth-surface processes, such as wind, ocean waves, and the evaporation and precipitation of water.
B) Heat cancels out the cold, allowing geologic processes to occur.
C) Heat makes rock melt so the plates can move.
D) Heat from the earth warms human's houses during the winter.