__________ greatly influences the organization of the cerebral cortex

According to psychoanalysis, which of the following is the source of the libido?

a) superego b) preconscious c) ego ideal d) id

Right before baby Dom's mother leaves for work every morning, she takes her car keys off of a hook on the wall. As soon as Dom's mother unhooks the keys, Dom cries. In this example, __________ is the conditioned stimulus

A) Dom's mother leaving for work B) Dom's mother unhooking the keys C) Dom's crying D) morning time