Answer: Option (B) is the correct answer.
Explanation:
When clump of colored fluid rises at the top then it means that kinetic energy of lava molecules has increased.
As a result, they are moving randomly from one place to another. Hence, more is the number of collisions between these particles, more will be the heat produced by lava lamp.
Thus, we can conclude that as the clump of colored fluid at the bottom of the lava lamp rises to the top, its temperature will increase.
