Answer:
Unfortunately snow, ice and mud reduce the friction that the wheels have on the ground, causing them to slip.
Step-by-step explanation:
Although there are specific types of tires for these terrains, you will not always be equipped with them, either for economy or because you did not expect to travel through areas of that type. The safety chains sink into the ground increasing the friction of the wheels and preventing them from skidding. For this reason, putting car chains on your car wheels can help you resolve the situation and allow you to move on without having to change tires.