Your question is Short vs Long Term Promotion Impact. 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 are analyzing customer behavior before and after a promotion. The team wants to know whether the promotion changed behavior right away, and whether any effect persisted after the promotion ended.
How would you analyze whether a promotion changed customer behavior in the short term versus the long term?