Which of the following is NOT a function of marketing?

Product development is a critical component of marketing; however, financing is not typically considered a direct function of marketing itself. Financing refers to the methods and practices used to secure funds which can affect a business's ability to invest in marketing campaigns and product development, but it centers more around financial management and operational efficiency rather than marketing strategies.

The primary functions of marketing include distribution—which involves getting products to customers; product development—which emphasizes designing and improving products to meet consumer needs; and pricing, which entails determining the right price point for consumers and maximizing profitability. While financing supports these functions, it does not fall under the core responsibilities of marketing. Thus, recognizing the specific functions that focus on promotion, selling, and delivering products further clarifies why financing represents a different area of business operations.