Answer: a. First-line managers are the lowest level of management and manage the work of nonmanagerial individuals who are directly involved with the production or creation of the organization's products. First-line managers are often called supervisors or even shift managers, district managers, department managers, or office managers.b. Middle managers are found between the lowest and top levels of the organization. These managers manage the work of first-line managers and may have titles such as department head, project leader, store manager, or division manager.c. Top managers are responsible for making organization-wide decisions and establishing the plans and goals that affect the entire organization. These individuals typically have titles such as executive vice president, president, managing director, chief operating officer, or chief executive officer.