Which of the following is NOT a part of the marketing mix?

The marketing mix consists of elements that businesses use to market their products effectively, commonly referred to as the "4 Ps": Product, Price, Place, and Promotion. The core components focus on the strategies and tactics that directly influence how a product is positioned in the market and how it reaches consumers.

Employee training programs are not typically considered part of the marketing mix. While training is crucial for ensuring that the staff can effectively represent the product and deliver the associate services, it falls more under human resources and operations rather than marketing. The marketing mix specifically addresses how a business promotes and sells its products and does not delve into the internal training processes of the employees.

In contrast, price strategies, product design with unique selling propositions, and promotional tactics through advertising and public relations are all vital components that shape consumer perceptions and choices regarding a product. These components directly influence how a product is marketed and sold, fitting squarely within the framework of the marketing mix.