What best defines adaptive UI?

Adaptive UI refers to a user interface designed to modify its layout and functionality based on the user’s needs, context, and the various devices being used. This approach ensures that users have an optimal experience regardless of the device or situation, making it responsive to different screen sizes, orientations, and user interactions. The adaptive nature allows for tailored features and elements that better serve the user, enhancing usability and accessibility.

In contrast, the other options describe interfaces that lack flexibility: a static interface does not adjust to any changes at all, while a rigid layout structure applies the same design across all devices without considering user-specific requirements or device characteristics. An interface that responds to changes in screen brightness focuses solely on visual adjustment rather than the broader concept of user-centered adaptability.