Answer:
Groupthink
Step-by-step explanation:
In Debs role as supervisor, she assigned a formal group for a special project. While she was initially pleased with the group's progress on their tasks, she now fears the group may be suffering from groupthink as the members of the group appear to be so cohesive attached that they are unwilling to consider alternative solutions.
Various causes of groupthink occur in which group cohesiveness is most, for example in an excess group cohesiveness leads to a lack of perspectives from people within the group.