Option 1 -> Refers to the total expenses incurred in producing goods or services.
Option 2 -> Represents the cost of raw materials and resources used in production.
Option 3 -> The additional cost incurred when producing one more unit of output.
Option 4 -> The financial gain calculated as total revenue minus total costs.
Hence, Option 4: Profit -> Profit is the fundamental measure of business performance, calculated by subtracting total costs from total revenue (Profit = Revenue - Cost). When revenue exceeds costs, the business earns a positive profit; when costs exceed revenue, it incurs a loss. This metric helps businesses evaluate their financial success and make strategic decisions. -> correct