The drink represents an experience of access to the adult world. As drinking behavior is regularly observed in the adult world, it serves as a model for adolescents and young people to follow. Also the possibility of altering one's consciousness and experiencing new psychological states matters to young people, since they are exactly in a renewing age of personality. And alcohol is an easy alternative that society offers for this experimentation, without advising young people and adolescents about the risks.
The problem with this is that alcohol can cause short and long term problems. In the short term, excessive alcohol consumption can cause intense and debilitating headaches.
The answer is D. She is getting together with other people from her class. That makes it a GROUP of people who are going to STUDY for the class, or in other words a study group.
