Answer: Option (b) is the correct answer.
Explanation:
The energy present within the molecules of an object is known as thermal energy.
When an object is warmed then its molecules gain more kinetic energy and results in more number of collisions. Then they release extra energy in the form of heat into the atmosphere.
And when a cool object is placed adjacent to a warmer object then heat transfers from warm object to cool object.
Thus, we can conclude that thermal energy moves from warmer objects to cooler objects.
