Americans with Disabilities Act (ADA) Practice Test

A barrier is the obstacle that blocks access in a public accommodation. It can be a physical obstacle, like a step without a ramp, or a communication obstacle, like missing captions. The term barrier names the obstruction itself, which is what the question describes. Access refers to the ability to reach or use something, not to the obstacle. A facility means the building or space, not the obstruction. Inconvenience is not a technical term used to describe obstructions. So barrier is the best fit because it directly identifies the obstacle that hinders use or access.