The team is redesigning checkout from four steps to one page. What single metric decides whether it worked, and what else do you watch?
Answer it out loud before you open anything. The value of the flags below is in comparing them to what you actually said.
The situation behind the question
The designer's goal is "reduce friction". Finance cares about revenue. Support has complained about address errors. The redesign will run behind a flag for a portion of traffic.
What it is really testing
Whether the candidate picks a metric that moves when the product improves and cannot be gamed by the change itself, and pairs it with guardrails that catch winning the wrong way.