I believe there are only 3 members.
Yes because they can and because they do
The correct answer is letter C. To assume that all are the same and to categorize is to form stereotypes. Often stereotypes cloud a person's judgment about people around him. This is a very common practice that all individuals do because we associate a lot of things with behavior and physical appearance.
The answer could be schizophrenia or agitated dementia or a psychotic disorder.