Your question is Loyalty Offer Repeat-Purchase Test. 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).
You work on a retail shopping experience and want to test a new loyalty offer intended to increase repeat purchases. The team is concerned that any lift could come from short-term behavior changes or could hurt other parts of the customer experience.
How would you design the A/B test to measure whether the loyalty offer truly increases repeat purchases? Walk through how you would define success, choose the randomization unit, and decide whether the offer should ship.