Which of the following is NOT a stage of group development?

In the context of group development, the stages typically recognized are Forming, Storming, Norming, and Performing. These stages describe the various phases that teams go through as they form and grow together.

Forming is the initial stage where group members get to know each other and begin to understand their roles within the group. During the Storming phase, conflicts may arise as members start to assert their opinions and challenge group dynamics. Norming represents a stage where team members resolve their differences, establish norms, and work collaboratively towards common goals.

The term "Managing" does not represent a stage of group development recognized in the standard models of team development, which includes Tuckman's model. Instead, it refers more to the ongoing actions that might occur at any stage rather than a distinct phase in the team's evolution. Therefore, it is not classified as a standalone stage of group development.