What are the design principles?

• A. Structure; Simplicity; Visibility; Feedback; Tolerance; Reuse
• B. Structure; Color; Typography; Layout
• C. Efficiency; Simplicity; Consistency; Aesthetics
• D. Structure; Accessibility; Performance; Security

Answer: (A)

These principles guide how to craft user interfaces that are understandable and forgiving. Structure keeps pages organized so users can predict where information and controls live. Simplicity reduces unnecessary complexity, helping users focus on what matters. Visibility ensures important options and information are easy to find when needed. Feedback communicates the results of user actions and system status, keeping people informed. Tolerance designs for human error by preventing mistakes when possible and making recovery easy. Reuse promotes consistency and efficiency by using familiar components and patterns across the interface. Together, they cover organization, clarity, discoverability, communication, error resilience, and consistency.

Other options miss one or more of these core ideas: Color, Typography, and Layout are important design tools but don’t by themselves represent a complete, principled approach to UI design; Efficiency, Consistency, and Aesthetics omit visibility, feedback, and error tolerance; Accessibility and Security are vital considerations but aren’t encapsulated in this particular six-principle set.