This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
[{'content': 'Which of the following is not a pa of vision 2020 \nSelect and explain. \nA. WHO, B. UNICEF, C. ORBIS international, D. IAPB', 'role': 'user'}, {'content': 'Answer: B \nExplanation: VISION 2020: The Right to Sight is the global initiative for the elimination of avoidable blindness, a joint programme of the World Health Organization (WHO) and the International Agency for the Prevention of Blindness (IAPB). ORBIS International is a member of the IAPB. VISION 2020: The Right to Sight was launched in 1999. It sought to promote: "A world in which nobody is needlessly visually impaired, where those with unavoidable vision loss can achieve their full potential."', 'role': 'assistant'}]