Which is true about Freud's idea of the preconscious mind:.
a) It contains only hidden or forgotten memories.
b) It contain only what is happening in the present.
c) It's our mind's state before we're born.
d) It contains both hidden memories and what is happening.

D. It contains hidden memories and what is happening.

Explanation:

Sigmund Freud was a great neurologist known very much whose findings and works pushed through from 1856-1939.

He became popularly known as the founding father of psychoanalysis. Psychoanalysis emphasizes the influence of our unconscious mind on our behavior. As part of this theory, Freud believed the mind was composed of three parts: the id, ego, and superego. The preconscious mind is an important part of this process. The preconscious contains thoughts that are unconscious but can be easily recalled. Let's take a look at these concepts with a bit more detail.