Answer: A. Performing
Explanation: Team development is defined as the process of learning to work together effectively. Of the five definitive stages of team development, the group is at the performing stage. The performing stage is one characterized by a consensus and cooperation between team members who have been well-established, mature, organized, and well-functioning. There is a clear and stable structure in the performing stage of team development, and members are very committed to the team’s mission. While problems and conflicts might still emerge, they are however, dealt with constructively.