The primary advantage ofReplenishment Planning (A)is ensuring optimal inventory levels by predicting demand and adjusting supply plans accordingly. It uses demand signals—e.g., a forecast of 500 units for next month—to trigger timely replenishments, avoiding overstock (costly) or stockouts (lost sales). Option B is incorrect—static levels defy dynamic demand; Replenishment Planning adapts to fluctuations. Option C is false—demand forecasting is its foundation. Option Dis unrelated—payment cycles are a financial process. For instance, if demand spikes unexpectedly, it recalibrates orders, saving costs and maintaining service levels, a key operational benefit.