Final answer:
Residents in wheelchairs should face the back of the elevator when riding in elevators for safety and convenience.
Step-by-step explanation:
When riding in elevators, residents in wheelchairs should face the back of the elevator. This is because facing the back provides a safer and more secure position for wheelchair users in the event of sudden stops or jolts. Facing the back of the elevator also allows wheelchair users to be better positioned to exit the elevator when it reaches their desired floor.