Key points for the norming stage: Team members accept their roles within the group. They come to terms with the other members' idiosyncrasies. There is an emergence of insight, as everyone becomes more receptive to feedback. Group communication becomes more open as members share task status updates amongst themselves. Reference: https://pumble.com/learn/collaboration/stages-of-group-development/#:~:text=Key%20points%20for%20the%20norming,task%20status%20updates%20amongst%20themselves.

The correct answer is B. Performing stage. The performing stage of group development is associated with accepting team responsibilities. During this stage, the group members are focused on achieving their goals and working together effectively.