Option D. Working group, they are referring to self-managed groups that consist of a group of people in charge of a project where each one plays a role in charge and has a responsibility. Within this group of self-managed teams each person has tasks in common with the rest of the team members and they work through a planning using specific tools to carry out the assigned project. D. Working group refers to self-managed groups consisting of a group of people in charge of a project where each person plays a role in charge and has a responsibility. Within this group of self-managed teams, each person has tasks in common with the rest of the team members and they work through a planning using specific tools to carry out the assigned project.