Final answer:
A hierarchy chart is used by Liza to explain an organization's formal structure to trainees, which illustrates the organization's layout, chains of command, and employees' roles.
Step-by-step explanation:
Liza, a trainer, is using a hierarchy chart to help employees understand how they and their jobs fit within the broader organization. A hierarchy chart is a visual representation of the organizational structure, showing the different levels of management and staff, as well as the relationships and ranks of jobs within the organization. It is an essential tool for communicating the layout of an organization, delineating chains of command, and helping employees to understand their roles and responsibilities within the larger context.