Answer:
Heat energy
Step-by-step explanation:
When a rolling ball experiences friction, the kinetic energy of the ball is converted into thermal energy, or heat, due to the frictional force between the ball and the surface it is rolling on. This conversion occurs because the frictional force between the ball and the surface opposes the motion of the ball and causes it to slow down. As the ball slows down, its kinetic energy decreases and this energy is converted into thermal energy due to the friction. Therefore, option B is the correct answer.