Which of the following is NOT one of the five marketing mix factors related to problem solving?

The five marketing mix factors are commonly known as the "4 P's" plus the target market, which includes Product, Price, Promotion, and Place. These elements are integral components that businesses strategically manipulate to reach their goals and solve market-related problems.

Segmentation, while a critical aspect of market research and strategy, does not fall under the traditional marketing mix framework. Instead, segmentation refers to the process of dividing a broader market into smaller, more defined categories of consumers with similar needs or characteristics. It serves as a basis for identifying target markets but doesn't directly fit into the hands-on strategies used for product promotion or distribution.

The other choices—promotion, target market, price—are all central to the marketing mix. Promotion encompasses the various methods of communication used to inform and persuade potential customers. Price defines the amount charged for products or services, directly affecting demand and sales. The target market identifies specific groups of consumers that a business aims to serve with its marketing efforts. Thus, the correct answer highlights an element that does not belong to the fundamental structure of the marketing mix used in problem solving.