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': 'What is the theme for World Health Day 2013? \nSelect and explain. \nA. Diabetes, B. Aging, C. High blood pressure, D. Antibiotic resistance', 'role': 'user'}, {'content': 'Answer: C \nExplanation: World Health Day is celebrated on 7 April to mark the anniversary of the founding of WHO in 1948. Each year a theme is selected for World Health Day that highlights a priority area of public health concern in the world. The theme for 2013 is high blood pressure. Ref:', 'role': 'assistant'}]