Final answer:
The organization that has a single, comprehensive long-term plan that leads every department within the organization is following Fayol's principle of unity of direction.
Step-by-step explanation:
The organization that has a single, comprehensive long-term plan that leads every department within the organization is following Fayol's principle of unity of direction. Unity of direction means that every employee is working towards the same set of objectives and is guided by a single plan, ensuring coordination and alignment across the organization.
For example, let's say a company has the long-term objective of increasing market share. To achieve this objective, each department within the organization, such as marketing, sales, and operations, would have their own specific goals and tasks that contribute towards increasing market share. These departmental goals and tasks are all aligned with the overarching objective of the organization, which is increasing market share. By having a single, comprehensive long-term plan that guides every department, the organization ensures unity of direction.