An increase in the average kinetic energy of a sample of copper atomsoccurs with an increase in(1) concentration (3) pressure(2) temperature (4) volume

I think the correct answer is in option 2. An increase in the average kinetic energy of a sample of copper atoms occurs with an increase in temperature because temperature is said to be directly proportional to the kinetic energy of the molecules. Therefore, increasing the temperature increases the kinetic energy of the molecules.

Answer is to avoid experimental error