The correct response that demonstrates Newton's third law in the context of bumper cars is:
If two bumper cars collide with a certain force, then they will move away from each other in opposite directions with the same force.
This response aligns with Newton's third law, which states that for every action, there is an equal and opposite reaction. When the bumper cars collide, each car exerts a force on the other, and they move away with equal forces in opposite directions.