<prompt> Which of the following structures of the mind work on an unconscious level?The id onlyThe id and the ego onlyThe id, ego, and superegoThe ego and superego only  <response>: In Freuds 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. 