This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Social & Preventive Medicine
Cyclo propagative means: 
Select and explain. 
A. Only development, B. Only multiplication, C. No development and no multiplication, D. M ul ti plication and development
D: M ul ti plication and development
Answer: D: M ul ti plication and development 
Explanation: Ref: Park 'Textbook of Preventive and Social Medicine', 22nd edition.Explanation:Biological transmission PropagativeOnly multiplication, eg - plague bacilli in flea, dengue virus in mosquitoCyclo developmentalOnly development eg- filariai parasite in mosquitoCylco propagativeMultiplication and development eg. malarial parasite in mosquito* Cylco - development cycle* Propagative - multiplication