Which action is crucial to avoid penalties during a driving test?

Staying within lane boundaries is crucial during a driving test because it demonstrates fundamental control of the vehicle and adherence to traffic regulations. Proper lane discipline is essential for safety and helps other road users anticipate your actions. Maintaining your position within the designated lanes shows that you can navigate the road safely, which is a key factor evaluators look for in a driving test. This action also minimizes the risk of collisions and showcases your ability to follow road signs and markings properly, which are integral components of safe driving practices.