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
What are fly belts? 
Select and explain. 
A. Insecticide impregnated belts to ward off tse tse flies, B. Regions infested with tse tse flies, C. Sticky paper strips to catch flies, D. None of the above
B: Regions infested with tse tse flies
Answer: B: Regions infested with tse tse flies 
Explanation: Regions of Africa are ravaged by tse tse flies. Such regions infested with flies are known as fly belts. Chapter: Environment and health Ref: Park 21st edition page: 716