Final answer:
The upper levels of a hierarchical organization are made up of managerial, professional, and technical employees who oversee operations, provide specialized knowledge, and offer practical skills, all while following a chain of command.
Step-by-step explanation:
In a hierarchical organization, the upper levels consist of managerial, professional, and technical employees.
These individuals are responsible for overseeing the strategic direction and operations of the organization, as well as providing specialized knowledge or technical expertise.
Managers supervise the work of employees, professionals bring specialized knowledge, and technical staff offer practical skills essential to the functioning of the organization.
Together, they follow a chain of command and ensure the organization's goals are met.