A "product line" refers to a group of related products offered by a company. These products usually share similar characteristics, functions, or target markets. For example, a company like Coca-Cola may have a product line that includes various types of soft drinks, such as Coca-Cola, Diet Coke, and Coca-Cola Zero. Companies often develop product lines to meet diverse customer needs and preferences. By offering multiple options within a product line, businesses can attract a wider audience and increase sales. This strategy allows companies to compete effectively in the market while maintaining brand consistency.