Answer: The given statement is true.
Step-by-step explanation:
Average kinetic energy is defined as the sum of rotational, translational, and vibrational energies possessed by the molecules of a substance.
This energy is present in a substance because of the movement of its particles. This means that a substance whose molecules move from their initial position will possess average kinetic energy.
For example, when molecules of a solid substance is vibrating so, it means they are possessing average kinetic energy.
Thus, we can conclude that the statement all the molecules of a substance possess the "average kinetic energy" value, is true.