Answer: (D) Norming stage
Step-by-step explanation:
The norming stage one of the type of stage in the Tuckman's five stage model of the development process which basically focuses on the group identity development.
The norming stage is one of the process that helps in constructing the various types of regulations based on the psychological assessment.
According to the given question, Tracy is feels excited about the given work after some arguments and the fights and now the Tracy's group is basically experiencing the normimg stage.
Therefore, option (D) is correct answer.