Which of the following methods can be used to increase the average kinetic energy of the molecules of an object?

a. increase the size of the molecules.
b. slow down the speed of the molecules.
c. decrease the amount of heat supplied.
d. increase the temperature of the object.

Answer D. Increase the temperature of the object.

Explanation:

Kinetic energy: It is the energy of the particle derived when the particles are at its motion (movement)

Formula to calculate kinetic energy

From the above equation kinetic energy depends on

1. mass of the particle.

2. velocity of the particle.

Unlike mass of the particle , velocity of the particle can be increased by increasing the temperature of the particle.