What are the key UCD principles?

• A. User focus, Testing, Iteration
• B. User focus, Accessibility, Performance
• C. Speed, Aesthetics, Functionality
• D. Requirements, Stakeholder buy-in, Documentation

Answer: (A)

In UCD, the design process is driven by the people who will use the product, and it improves through real-world feedback captured during testing and across repeated design cycles. The combination of focusing on user needs, validating ideas with testing from actual users, and iterating based on what you learn best embodies how usability is built into every step—from discovery to final evaluation. In practice, you research users and tasks, create prototypes, test them with users, and refine the product after each round of feedback. While accessibility, performance, or other qualities are important, they aren’t the trio that defines the UCD approach itself; they sit alongside UCD goals but aren’t the core process shown by these three elements. Other options emphasize requirements, documentation, or broad design attributes rather than the user-centered, iterative testing loop that lies at the heart of UCD.