This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: International health agencies, Subject name: Social & Preventive Medicine
[{'content': 'The most impoant single function of World Health Organization is? \nSelect and explain. \nA. Prevention and control of specific diseases, B. Development of comprehensive health services, C. Health literature & Information, D. Biomedical research', 'role': 'user'}, {'content': "Answer: B \nExplanation: WHO : Established in 1945. Constitution came into force on 7th April 1948. Hence, 7th April is WORLD HEALTH DAY. Head quaers is located in GENEVA. WHD 2018,2019 Theme is Universal health coverage. WHO's most impoant single function is to promote and suppo national health policy development and the development of comprehensive national health programmes. Other Works of WHO - Prevention and control of specific diseases, Family health, Environment health, Health statistics, Health literature & Information, Biomedical research, Cooperation with other organizations.", 'role': 'assistant'}]