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': 'McKneown’s Theory states that reduced prevalence of Tuberculosis occurs due to \nSelect and explain. \nA. Enhanced knowledge and awareness, B. Medical advancements, C. Behavioural modification, D. Social and environmental factors', 'role': 'user'}, {'content': 'Answer: A \nExplanation: • Thomas McKeown attributed the modern rise in the world population, AND DECLINE OF TB from the 1700sto the present to broad economic and social changes (especially diet and nutrition – “Nutritional Determinism”) rather than to targeted public health or medical interventions.', 'role': 'assistant'}]