Question

Which theory was proposes that humans have an unconscious mind that we repress our threatening urges and desires?

Answer 1

This was first developed by Dr.Sigmund Freud. He designated the Id, Ego and Superego.

Explanation:

The Id is the unconscious mind. The ego is our present awareness, and the superego is basically our ethical framework.

See also:
https://www.verywell.com/the-id-ego-and-superego-2795951

Answer 2

It is called the tripartite theory.

Explanation:

You can imagine it like this:

Your Id is the little devil on your left shoulder telling you to do all the worst things that would not be socially acceptable.

Your Superego is the little angle on your right shoulder telling you to do all the best things.

Your Ego is an invisible little man stood on your head that tells you what you should actually/are going to do and makes sure that both the Id and Superego are satisfied. All outcomes the Ego comes out with outcomes that are hopefully socially acceptable.