The given answer "All of the above" is correct because all the statements mentioned - "What goes up must come down," "Apple falling from a tree," and "Punishment for any wrong doing" - can be explained by the law of gravity. The law of gravity states that any object near the Earth's surface will be attracted towards it, causing it to fall down when it is lifted or thrown up. This principle applies to objects like apples falling from trees and even to the concept of punishment for wrongdoings, as it implies that there are consequences for actions.