Final answer:
When towing a trailer, it is important to ensure that the trailer has a safety chain securely attached to the frame of the towing vehicle and a fail-safe latch on the trailer hitch.
Step-by-step explanation:
When towing a trailer, it is important to ensure that the trailer has a safety chain securely attached to the frame of the towing vehicle. This provides an additional level of security in case the trailer becomes detached from the hitch. The safety chain helps prevent the trailer from completely separating from the towing vehicle.
In addition, it is crucial to have a fail-safe latch on the trailer hitch. This latch ensures that the trailer remains securely attached to the towing vehicle, even during unexpected movements or jolts.
Attaching the safety chain to the vehicle's bumper is not recommended because the bumper may not be strong enough to withstand the forces created by the trailer.