Many people will answer wrong for sure

Answer: Number 4 when he took a saw and cut off the branch he was sitting on.

Number 4 became the correct answer when he made the unwise decision to take a saw and cut off the branch he was sitting on. This action perfectly exemplifies a self-defeating move, as by cutting the very branch that supported him, he caused himself to fall. It’s a metaphor often used to highlight the consequences of actions that undermine one's own position or stability. In this case, the humor and irony lie in the lack of foresight, as the person fails to realize that their action directly leads to their downfall. The scenario serves as a reminder to carefully consider the outcomes of our decisions, especially when they have the potential to affect us negatively.