Once Again,your Teacher Has Startled You with a Question When

Once again,your teacher has startled you with a question when your mind is elsewhere.You try to bluff your way out of the dilemma you find yourself in,but to no avail.In order to help you understand the question she has asked you,your teacher asks you to write an essay on the topic of consciousness,in which you first must compare consciousness with nonconscious processes,preconscious memories and the unconscious,and show why we need consciousness.