Describe a rule for how thermal energy moves from one location to another, regardless of if it is conduction, convection, or radiation.

The temperature difference is the driving force for heat transfer.

The larger the temperature difference, the higher the heat transfer rate. Therefore the temperature difference is responsible for the existence of thermal energy exchange processes.

Explanation:

Experience tells us that if you leave a cold can of drink on the table, at some point it will reach the room temperature, while  that a hot baked potato will cool down. When a body is placed in a  medium that is at a different temperature, Energy Transfer has  place between body and medium until thermal equilibrium is established,  It means, when they both reach the same temperature. The direction of the  Energy Transfer is always from the body with a higher temperature to the one with the lower temperature.

your answer would be fusion