Final answer:
Option 3. Auxiliary tow lights are known as drag lights. They are essential for the safety of a towed vehicle and must function correctly.
Step-by-step explanation:
Auxiliary tow lights are also known as drag lights. These are additional lights usually mounted on the rear of a vehicle being towed. They serve to alert other drivers of the presence of the towed vehicle and to display the necessary braking, turning, and driving conditions. When towing a vehicle, it is important to ensure that these lights are functioning correctly for the safety of all road users.
Auxiliary tow lights are also known as tail lights. These lights are typically located at the rear of a vehicle and are used to signal other drivers of the vehicle's movements and intentions. Tail lights are an important safety feature of a vehicle, as they help other drivers to see the vehicle during low visibility conditions or at night.