Which principle minimizes the physical effort required to use a product or facility?

• A. Low Physical Effort
• B. Equitable Use
• C. Flexibility in Use
• D. Perceptible Information

Answer: (A)

The key idea here is designing so that using the product or facility requires as little physical effort as possible. This principle means controls, doors, and other operational elements should be easy to activate with minimal force, a smooth motion, and reachable, comfortable grips. It helps people with limited strength, dexterity, or mobility avoid fatigue or strain while using the item. While other principles address different accessibility aspects—such as making things usable by everyone (Equitable Use), allowing different methods of use (Flexible in Use), or ensuring information is easy to perceive (Perceptible Information)—they don't specifically target minimizing the effort needed to operate. So the principle that focuses on reducing exertion is Low Physical Effort.