Brain teaser: Only a genius can spot the guy making foolish mistake in this image

Brain teasers are a good way to test your IQ, logical reasoning, and observation skills. These tricky puzzles push you to think quickly, analyze details, and spot errors within a short time frame. They encourage critical thinking and challenge your ability to assess situations logically under time pressure.
Solving brain teasers improves your problem-solving skills and conditions your mind to think outside the box. They sharpen mental agility, improve decision-making, and create a sense of awareness. If you are a person who likes to test your intelligence and attention to detail, today's puzzle will be a great challenge for you!
Four men are sitting on different branches of a tree. Each man is cutting the branch he is sitting on. However, one of them is making a critically foolish mistake that could lead to an inevitable consequence
You have to identify which of the four men is acting illogically. But there's a catch—you only have 5 seconds to spot the error!
Show me who makes the worst decision instantly. It is a sharp observation, sound reasoning, and speedy thinking test. Take a good look at the picture, grasp the situation, and trust your instincts. Are you ready? Let's get started!
At first glance, all four men appear to be in danger, but one of them is making an especially poor choice. The other three still have time to react, while one individual has sealed his fate.
If they are smart with good logical reasoning abilities, the mistaken move here in this puzzle is obvious at once. How you determine its solution is that you examine what way each of these men cuts, which means that his instability can be traced.
Can you do that within 5 seconds? Fine. Let us get the correct solution!
The foolish guy in this image is Man A because he cuts the branch from a point where he will surely fall. As opposed to others, he will have no time to run for his life after the snapping of the branch.