In psychoanalytic theory, the basic defense mechanism that banishes from consciousness anxiety-arousing thoughts, feelings, and memories is called

Repression

Explanation:

Repression is a type of defense mechanism that is used in psychological terms to repress the feelings, emotions and thought by a person. The purpose of this defense mechanism is to take away the feelings of emotions, thought from the conscious to minimize the feelings of thought anxiety, etc. It is not as so simple as it looks.

It is not just simply to avoid thought, belief, etc. In the Freudian view, it is completely hiding things from consciousness. These hidden feelings will start to create a problem in personal behavior and personality. The defense mechanism was proposed by Sigmund Freud and his daughter Anna Freud.