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': 'James Lind was associated with: \nSelect and explain. \nA. Multifactorial causation, B. Prevention of Scurvy, C. Pox vaccine, D. Germ theory of disease', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Prevention of Scurvy', 'role': 'assistant'}]