Which of the following KPIs is most critical for resolving on-shelf availability issues in the...

The correct answer is B .

On-shelf availability problems are supply-chain execution problems: the product must be available when the shopper wants to buy it. CMKG explains that supply chain affects inventory, forecasting, availability, cash flow, service levels, and shopper experience. Fill Rate is the most direct KPI among the options because it measures the ability to fulfill demand from available stock without lost sales or backorders. A weak fill rate leads directly to out-of-stocks and poor shelf availability.

Option A, Inventory Turnover, measures how quickly inventory sells through, but high turnover does not guarantee shelf availability. Option C, Gross Margin, is a financial metric, not an availability KPI. Option D, Order Cycle Time, measures replenishment speed, but it does not directly show whether customer or store demand is being fulfilled. Fill Rate is the best answer.