Final answer:
The four business functions in order along the value chain are Design, Production, Distribution, and Customer Service, which aligns with option C) B D C A.
Step-by-step explanation:
The order in which business functions appear along the value chain starts with Design (B), as this is where the conceptualization and specifications of a product or service are formulated. After the design phase, the next stage is Production (D), where the actual manufacturing or creation of the product or service takes place. Once the products are produced, they must be brought to the market, which is where Distribution (C) comes in, involving logistics and delivery of goods to retailers or directly to consumers.
Finally, the last stage is Customer Service (A), which involves after-sale support and services to maintain customer satisfaction and build loyalty. Therefore, the correct sequence is Design (B), Production (D), Distribution (C), Customer Service (A), which corresponds to option C) B D C A.