Final answer:
The inborn drive for self-gratification in Freud's personality theory is the Id, which seeks immediate gratification based on the pleasure principle.
Step-by-step explanation:
In Sigmund Freud's theory of personality, the inborn drive for self-gratification is aptly referred to as the Id. This component of the mind is responsible for our basic drives and operates on the pleasure principle, which is the desire for immediate gratification of needs such as hunger, thirst, and sexual desire. The Id is present from birth and is the source of our most primitive urges.
The Ego, on the other hand, is the rational part of our personality, functioning on the reality principle and balancing the desires of the Id with the moralistic goals of the Superego, which represents the learned rules and social norms we acquire from our interactions with others. In Freud's theory of personality, the inborn drive for self-gratification is the Id. The id is the part of our personality that contains our most primitive drives or urges and seeks immediate gratification on the pleasure principle.