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 statement is aligned with Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. When the two bumper cars collide, they exert forces on each other that are equal in magnitude but opposite in direction, resulting in them moving away from each other.