Answer:
a. id
Explanation:
According to o Freud's personality theory, the human psyche is divided into three distinct parts, id, ego, and superego. These three parts develop in different stages of the life of the human. The id is the primitive stage of human personality. It explains and responds to the immediate requirements of the person. The basic desires, needs and urges of a newborn child belong to this stage. It works on the pleasure principle and focuses on the immediate satisfaction of the self. In the above case, the Cookie Monster's urge to eat cookies reflects his id principle.