To forecast upcoming trends, always look at?

• A. Vendor lead times
• B. Seasonal variations
• C. Advertising spend
• D. Past sales trends

Answer: (D)

Forecasting upcoming trends starts with examining how demand has moved in the recent past. Past sales trends reveal the direction and speed of change, providing a data-driven baseline for what to expect next. By looking at how sales have risen, fallen, or stayed steady, you can project the likely trajectory and quantify the pace of that change. This historical signal is strongest because it directly reflects real customer behavior, which forecasting methods use as the starting point. You can then refine the forecast by considering seasonal patterns or planned promotions, but the core insight comes from recent sales history. Seasonal variations show predictable yearly fluctuations and help adjust the forecast, not determine the long-term trend. Advertising spend can affect demand, but it isn’t a consistent predictor of future trends and is better used as an input for scenario planning. Vendor lead times influence how much stock you need, not the direction of demand itself.