Before opening the doors to exit a vehicle, you must always make sure that…
A)the vehicle's emergency lights are on.
B)the reflective vest has been put on.
C)no danger is caused to other users.Correct
Before opening the doors to exit a vehicle, you must make sure that no danger is caused to other users, such as cyclists, motorcyclists or pedestrians who may be circulating nearby. This is a critical road safety maneuver that requires checking mirrors and blind spots to avoid accidents. The other options (emergency lights and reflective vest) are important measures in other situations, but they are not the primary concern when exiting the vehicle.