How does ConstraintLayout enable complex, responsive UIs?

This tests your practical knowledge of modern Android UI performance and adaptability. Interviewers want to see you move beyond legacy layouts. A great answer first explains how `ConstraintLayout` flattens view hierarchies to reduce nested layouts, improving measure/layout performance. Then, define chains for distributing groups of views (e.g., buttons in a dialog) and barriers for creating constraints against dynamic content (e.g., a label next to a translated text view). A red flag is giving vague definitions without concrete use cases.