Your question is Leading an Ill-Defined Project. 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 you were asked to lead a project that was not well defined. How did you create clarity, align stakeholders, and decide what to do first when the goals, scope, or requirements were still ambiguous?