What Issue Is Associated with the Idea of Groupthink

What issue is associated with the idea of groupthink?

A) It fosters a mob mentality that leads to poor decision making and creates false assumptions on what is right and wrong.
B) It perpetuates conscious or unconscious feelings in favor of or against a person, idea, or thing.
C) It shows preference for being part of a specific group because that group shares the same ideas and looks.
D) It involves a conscious decision to break the law and destroy anything that the group does not like or agree with.