Select the correct answer. What is the reason for heat transfer from one substance to another

Difference in temperature.

Explanation:

Conduction is the movement of heat energy through a substance or from one substance to another by direct contact of atoms and molecules. Heat moves directly from one molecule to another. The heat energy speeds up the movement of the atoms and they collide with other molecules setting them into faster motion.

answer; i believe that the correct answer is (c) explore the outer planets; / plz check good luck

where's the diagram?