Which action is NOT advisable when dealing with a tailgater?

When dealing with a tailgater, braking abruptly is not advisable because it can increase the risk of a rear-end collision. Tailgaters often follow too closely, and if a vehicle in front suddenly brakes, it doesn't give the tailgater sufficient time to react, which could lead to a dangerous situation. Gradually reducing speed, on the other hand, allows for a more controlled response that can prevent panic and helps maintain safety on the road. Additionally, changing lanes safely to allow the tailgater to pass can be an effective strategy to get them out of your way without causing a hazardous situation. Maintaining composure and focus helps the driver make safer decisions, ensuring that they are aware of their surroundings and can manage the situation appropriately.