Which of the following is typically included in discussions of product classes?

The correct focus here is on packaging, as it is a critical component when discussing product classes. Product classes refer to the categories or classifications of products based on shared characteristics such as their nature, use, or intended market. Packaging plays a significant role in defining a product class due to its influence on branding, consumer perception, and how the product is presented in the market.

Effective packaging not only protects the product but also provides essential information about its use and enhances its appeal to consumers. It can differentiate a product within its class, influencing buyer behavior and market positioning. Furthermore, discussions around product classes often encompass aspects like packaging, as it directly affects the product's identity and competitive strategies, making it intrinsic to understanding how products are categorized and marketed.

Other elements often associated with product classes, such as logistics, corporate structure, and supply chain management, are more about the operational functionality and overall organization rather than the intrinsic qualities that define the product itself. Thus, while relevant to the broader picture of marketing and operations, they do not directly pertain to the categorization of products by class in the same way packaging does.