Your question is Validate Design Choices with User Data. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
How did you validate your design choices with actual user data?
In your answer, focus on how you chose the right metrics, what data you looked at, and how you determined whether the design change helped or hurt. Keep it practical and specific.