The correct answer is B) a formal group.
The group of managers that Bill discovers is an example of a formal group.
During their visit to a large manufacturing business, Bill discovers a formal group. It is a group of managers who have been placed together to study and recommend a course of action on a flextime schedule for employees.
When we are referring to an organization, a formal group can be understood as a workgroup that is formed by design, depending on a hierarchical composition. The members of this group have specific tasks according to the work they perform in the company.
Usually, these groups are formed based on the experience of their members because they want to accomplish goals in a more effective way and to improve the decision-making process of difficult issues.