Final answer:
The postmaster at a heavily regulated post office can have a broader span of control than a manager at a less structured restaurant because standard rules and procedures reduce the need for direct supervision.
Step-by-step explanation:
In organizations with extensive rules and standard operating procedures, such as a post office, the role of individual employees is clearly defined by these guidelines. These regulations enable a postmaster to have a broader span of control compared to a manager in a less structured environment, like a restaurant with few set rules and procedures. The reason for this is that the rigid structure of a bureaucracy allows for easier control of employees' tasks and behavior, reducing the need for direct supervision by postmasters and therefore enabling them to manage more employees effectively.