The main elements of a firm's marketing strategy known as the 4 P's: product, price, promotion, and place.

• A. Marketing plan
• B. Product mix
• C. Marketing mix
• D. Brand extension

Answer: (C)

The main idea here is the marketing mix—the set of controllable tools a firm uses to influence demand for its product or service. The four elements—product, price, promotion, and place—together form this framework, guiding how a company designs and delivers its offering to customers. Because the four Ps explicitly describe these components, they are the standard way to refer to the marketing mix.

Other options describe broader concepts rather than the specific four elements. A marketing plan is the overall strategic document that outlines marketing activities, not the four tools themselves. A product mix refers only to the range of products a firm offers, not the full combination of decisions about pricing, promotion, and distribution. Brand extension is a strategy for leveraging an existing brand to enter new markets or products, which is unrelated to the four marketing tools that comprise the mix.