Your question is Forecasting Demand With No History. 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).
How would you forecast demand for a new product category with no historical sales data at Apple? Explain the data sources, assumptions, forecasting method, stakeholder alignment, and process you would use to produce and refine the forecast. Describe how you would communicate uncertainty and translate the forecast into supply and launch decisions.