You want to prototype. What question does the prototype answer?
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
A teammate proposes "a two-week prototype of the AI assistant over our documentation, to see if it works". The interviewer asks you what you would say in the planning meeting.
What it is really testing
Whether the candidate insists that a prototype answers a stated question, predicts the answer before building, keeps it small enough to be thrown away, and knows the line between a prototype and the thing that gets shipped by accident.