We change a product price. What else changes?
Answer it out loud before you open anything. The value of the flags below is in comparing them to what you actually said — including whether you asked who uses it before naming what you would build it with.
The situation behind the question
The admin of the online store edits a product's price from 20 to 25. A customer has that product in their cart; another customer bought it yesterday and is about to request a refund; the analytics dashboard shows revenue for last week. The interviewer asks: "What should each of those see, and where should the price live?"
What it is really testing
Whether the candidate sees the change propagate through connected components and asks the source-of-truth question: which price is authoritative for which purpose, and who owns that state.