Final answer:
Seniority is not a typical basis for organizing departments within an organization; instead, they are organized by function, product, or geography to enhance specialization and efficiency.
Step-by-step explanation:
Individuals within an organization are commonly organized into departments for a number of reasons that enhance the productivity and efficiency of the business. However, seniority is not a typical basis for this kind of organizational structure. Instead, departments are more conventionally organized by function, product, or geography. This is to ensure that each team or department can specialize in a certain aspect of the business, thus making use of specialized skills, local advantages, and market demands, to increase overall efficiency and productivity.