This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Psychoanalysis, Subject name: Psychiatry
Expression and consequent release of previously repressed emotion is called as:- 
Select and explain. 
A. Regression, B. Dissociation, C. Abreaction, D. All of the above
C: Abreaction
Answer: C: Abreaction 
Explanation: Regression: Unconscious defense mechanism in which a person undergoes a paial or total return to earlier patterns of adaptation; observed in many psychiatric conditions, paicularly schizophrenia. Abreaction: A process by which repressed material, paicularly a painful experience or a conflict, is brought back to consciousness; in this process, the person not only recalls but also relives the repressed material, which is accompanied by the appropriate affective response. Dissociation: Unconscious defense mechanism involving the segregation of any group of mental or behavioral processes from the rest of the person's psychic activity; may entail the separation of an idea from its accompanying emotional tone, as seen in dissociative and conversion disorders.