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
[{'content': 'Most impoant cause of neurotic reaction is the excessive use of: \nSelect and explain. \nA. Projection, B. Regression, C. Suppression, D. Sublimation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Excessive use of regression causes neurotic illnesses. It is an immature defense mechanism in which person return to an earlier stage of development Eg- A PG Aspirant playing cricket in street with children', 'role': 'assistant'}]