The best response that explains how bumper cars are an example of Newton's Third Law of Motion is:
D. When bumper cars collide, one car will transfer its force to the other, and then they will bounce apart.
This option highlights the principle of action and reaction, which is the essence of Newton's Third Law. According to this law, for every action, there is an equal and opposite reaction. When the bumper cars collide, the force exerted by one car on the other results in both cars moving apart, demonstrating this law in action.