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: Social & Preventive Medicine
[{'content': 'AH of the following are components of Epidemiological triad except - \nSelect and explain. \nA. Environment, B. Agent, C. Host, D. Manpower', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Epidemiological triad \nThe occurrence and manifestations of any disease, whether communicable or noncommunicable, are determined by the interaction of following three factors.\n\nThe agent \nThe host \nThe environment \n\nThese three factors together constitute the epidemiological triad. \nMere presence of these factors does not cause disease, interaction of these three is required for causation of a disease. \nThe triangle of epidemiology \nThe triangle of epidemiology shows the interaction and interdependence of agent, host, environment and time (It is different from epidemiological triad which does not contain time, but contain other three components). \nAdvanced model of the triangle of Epidemiology \nThis new model includes all facets of the communicable disease model. The term ‘agent’ is replaced by causative factors and this model shows the interaction of: - \n\nCausative factors; \nGroup of population and their characteristic;\nEnvironment behaviour, culture, physiological factors, ecological elements; and \nTime.', 'role': 'assistant'}]