Who promoted the idea that there's a conflict between the conscious and unconscious mind? a. ernest hemingway b. werner heisenberg c. edgar degas d. sigmund freud

That was D. Sigmund Freud.
He believed that there is a huge discrepancy between what's conscious (things we are aware of) and what's unconscious (things that we aren't aware of). Sometimes, the unconscious surfaces through our dreams mostly, according to Freud's theories.