Answer:
The US Army where staff sergeants must report to their lieutenants, who must in tom report to the
captains who must report to the lieutenant colonels and so on through to the generals.
Step-by-step explanation:
A hierarchy is defined as a system where there is a chain of command from top to bottom, or from most important to least important, where orders are given and carried out.
Therefore, the best example of a hierarchy is option D.