Your question is Leading Through an Ambiguous Problem. 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).
Tell me about a time the business problem was not fully defined and you still had to move the work forward. How did you clarify the ambiguity, decide what to prioritize, and keep stakeholders aligned?