Ego is to id as ________ is to ________.

A) unconscious;conscious
B) biology;morality
C) reality principle;pleasure principle
D) regression;repression

Ego and id are both components of the psychoanalytic model of personality developed by Sigmund Freud. The ego operates based on the reality principle, meaning it considers the constraints of the external world and tries to satisfy the id's desires in realistic and socially acceptable ways. On the other hand, the id operates on the pleasure principle, meaning it seeks immediate gratification of primal instincts and desires without considering consequences or social norms. Therefore, the analogy suggests that there is a similar relationship between the reality principle and pleasure principle as there is between the ego and the id.