This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Social science, Mental health & Genetics, Subject name: Social & Preventive Medicine
[{'content': 'Which one of the following is an environmental factor associated with mental illness? \nSelect and explain. \nA. Emotional stress, B. Frustration, C. Broken home, D. all of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: the social and environmental factors associated with mental health comprises of worries, anxieties, emotional stress , broken homes , frustration, ,tension,unhappy, marriages, povey, industrialization environmental factors other than psychosocial ones capable of producing abnormal human behaviour are toxic substances (carboun disulfide), psychotropic drugs are barbiturates, thiamine deficiency, measles and rubella infection, radiation ref ;(page no;832)23rd edition of PARK&;s textbook of Preventive and Social medicine', 'role': 'assistant'}]