In the animal world, each animal is a potential food for other animals. When an animal observes another animal entering its field of vision, it must "determine" whether it is "offensive", "still in place" or "Escape". Choosing an attack can make the opponent's own food. Choosing "Do not move" can watch time changes, but it may also miss the opportunity to attack or escape. Choosing "Escape" is the most secure strategy, but if the other party is not dangerous, and "escape" is not necessary. If the other party is weak, choosing "escape" will make you lose the chance to get food. ,. What does this passage say? ['Behavioral choices for animals.', 'Every animal s decision is related to its survival.', 'If it is a carnivore, it may become the food of the other party.', 'Animal behavioral selection is instinctive, it is the result of evolution.']