The concept that an individual is limited in the number of subordinates that can be effectively supervised is called:

• A. Unity of Command
• B. Delegation
• C. Specialization
• D. Span of Control

Answer: (D)

The question tests span of control—the number of subordinates a supervisor can effectively oversee. In fire operations this matters because clear direction, timely decisions, and safety depend on keeping supervision within a manageable range. When a supervisor has too many people to supervise, communication breaks down, orders may be unclear, and safety can suffer. That’s exactly what span of control describes: the practical limit on how many subordinates one person can supervise effectively.

This differs from unity of command, which is about ensuring each subordinate reports to a single supervisor to avoid conflicting instructions; delegation, which is about entrusting authority to others to carry out tasks; and specialization, which is about dividing work into specialized roles. In short, the concept here is span of control. A typical guideline is about 3 to 7 subordinates per supervisor, with the exact number depending on task complexity, risk, and proximity.