According to psychoanalytic theory, the part of the personality that strives for immediate gratification of basic drives is the: a) idb) egoc) superegod) collective unconscious

a) id

Explanation:

According to the psychoanalytic theory, our personality is made of 3 different structures:

The id is the part of our personality we are born with. It focuses in instant gratification and is driven by impulses and in-the-moment-needs.The superego is the part of our personality that corresponds to our "conscience", it is the internalization of social norms and tells us what's wrong.The ego is the mediator between these two structures, is in charge of taking decisions and satisfy either the id or the superego.

Therefore, we can see that the part of the personality that strives for immediate gratification of basic drives is the Id.