Concept:Profit equals total revenue minus total cost.Explanation:Total cost is given as N75.00.Market price is P=N7.00 per unit.Output produced is Q=25 units.First, find total revenue using TR=P×Q.So TR=N7.00×25=N175.00.Now calculate profit by subtracting total cost from total revenue:Profit=TR−TCProfit=N175.00−N75.00=N100.00.Therefore, the firm makes a profit of N100.00.Answer:The profit is N100.00, which corresponds to option B.