This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
[{'content': 'Repetitive times work doing for a premonition of - \nSelect and explain. \nA. Obscession, B. Compulsion, C. Anxiety, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Repetitive irresistible thoughts → Obsession.\nRepetitive purposeful behavior (work doing) → compulsion.', 'role': 'assistant'}]