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: Ophthalmology
What was the theme for World Health Day in 1976? 
Select and explain. 
A. Better eyes better health, B. Foresight prevents blindness, C. Better vision better future, D. None of the above
B: Foresight prevents blindness
Answer: B: Foresight prevents blindness 
Explanation: "Foresight prevents blindness" was the slogan chosen by WHO for World Health Day in 1976, when effos were made around the world to raise public awareness about the problem of preventable blindness. Ref: Education Of Communicable And Non-Communicable Diseases By Sumer Lal Goel, 2009, Page 149.