Your question is Root Cause of Regional Revenue Decline. 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).
If revenue is declining in a specific region, how would you identify the root cause?
Explain how you would structure the diagnosis, what data you would request, which analyses you would perform, and how you would distinguish between internal execution issues and external market factors. Address how you would prioritize hypotheses and validate the findings before recommending action.