Answer the following question given this paragraph: 

Through the process of conduction, heat flows from warmer objects to cooler objects ( Figure below ). The lower mantle is heated directly by conduction from the core. In conduction , heat is transferred as atoms collide.


Q: What process involves the flow of heat from warmer objects to cooler objects?

 Choices:

- activation

- convection

- radiation

- conduction

A:
conduction
