Having already developed relationships with one another, Mikel's team members are now starting to focus on solving problems and completing their assigned tasks. Mikel's team has now entered the stage of team development.

Performing  

Explanation:

Stages of team development are famous for learning skills in groups. Team development stages have given by the researcher in which a person is learning how to adjust or work in groups. Five stages help a person to work in a team.  

There are five stages such as:

The performing stages: This is the fourth stage of team development theory. In this stage, the cooperation and the adjustment learned by the person. The team get fully mature and organized and do well functioning. At this stage, there is a stable and clear structure.  

well i'm late but i think its: b, c, and e