Which of the following is NOT a category of barriers?

• A. Physical
• B. Electronic
• C. Natural
• D. Access Routes

Answer: (D)

Barriers are classified by the type of obstacle they present. The main categories describe what blocks access: physical barriers are tangible objects or structures that block movement or use, such as walls, stairs, or doorway width. Electronic barriers are systems that restrict access through technology, like locked doors, security cards, or authentication requirements. Natural barriers come from the environment itself, such as rivers, cliffs, or rough terrain.

Access routes, on the other hand, refer to the paths people take to reach a destination. They describe the route, not the obstacle along it. An access route can be affected by barriers, but it isn’t itself a type of barrier. That’s why it’s not considered a category of barriers.