9. Nistu is cooking rice in a pot. When she leaves the pot on the stove for a while, the temperature of the rice increases. What happens to the molecules of the
rice when the temperature of the rice increases?

a The energy of the molecules in the rice increases.
b The cold energy of the molecules in the rice decreases.
c The energy of the molecules in the rice decreases.
d More heat molecules combine with the molecules in the rice.