Concept:Gross profit is found by subtracting the cost of goods sold from sales.Explanation:First, calculate the cost of goods sold.Cost of goods sold = Opening stock + Purchases - Closing stock.=₦30,000+₦16,000−₦10,000=₦36,000Then, subtract this from the sales figure.Gross profit = Sales - Cost of goods sold.=₦50,000−₦36,000=₦14,000Answer:D. ₦14,000.00