Final answer:
Without context on Cassandra's team's status, it is not possible to determine the stage of group development. 'Reference group' is the answer for groups influencing behavior, and phoning an elected official is an individual, not a group-level, political action.
Step-by-step explanation:
The student's question seems to reference Tuckman's stages of group development, which include Forming, Storming, Norming, Performing, and Adjourning.
However, without context regarding Cassandra's team dynamics and activities, we cannot confidently determine which stage applies. The answer requires specific details about the team's interactions, which are not provided.
As for the reference information provided:
- A group whose values, norms, and beliefs come to serve as a standard for one's own behavior is known as a reference group.
- The following cannot be considered a group-level form of political participation: phoning your elected official, as this is an individual action.