Concept:For a simple pendulum, energy is exchanged between kinetic and potential forms as it swings.Explanation:At the highest points, the bob is momentarily at rest, so kinetic energy is zero and potential energy is maximum. At the lowest point of the swing, the bob is at its maximum speed. Therefore, kinetic energy is maximum and potential energy is minimum at the lowest point. In the diagram, that lowest position is point 2.Answer:B. 2