The NIMS Management Characteristic of Chain of Command and Unity of Command means that each person "Reports to only one ICS supervisor".
Answer: Option A
Explanation:
Unity of command is one among the management principles of fourteen given by French mining engineer, Henri Fayol. According to this principle, in the hierarchical chain, subordinate must include rules, guidelines and messages to only a manager (one in number).
If the subordinates do not do this, there will be considerable confusion in terms of tasks and responsibilities. This management policy is also useful in cases where there is more than one manager but still reports to only one manager by subordinates.