This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Psychoanalysis, Subject name: Psychiatry
[{'content': 'Which of the following structures of the mind work on an unconscious level? \nSelect and explain. \nA. The id only, B. The id and the ego only, C. The id, ego, and superego, D. The ego and superego only', 'role': 'user'}, {'content': "Answer: C \nExplanation: In Freud's structural theory, the mind is divided into the Id, Ego, and Superego The id operates completely on an unconscious level, and is the most primitive pa .It works on pleasure principle While the ego and superego operate paly on an unconscious and paly on preconscious and conscious levels. Ego is based on reality principle and super ego is based on moral principle.", 'role': 'assistant'}]