You want to couple on a multiple-axle trailer. What must you ensure?

You answered correctly by choosing both answer 1 and answer 2. When coupling a multiple-axle trailer, it is essential to make sure the trailer is secured against rolling away to prevent accidents during the coupling process. Also, no one should be allowed to remain between the towing vehicle and the trailer, as this area is very dangerous if the vehicles move unexpectedly. These safety steps help prevent injuries and accidents. The connection of brake lines should only happen after the trailer is safely docked; it is not required before coupling. Knowing and following these rules ensures everyone's safety when handling trailers.