This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable Diseases, Subject name: Social & Preventive Medicine
Kala azar is transmitted by: 
Select and explain. 
A. Tse tse fly, B. Sandfly, C. Hard tick, D. Culex mosquito
B: Sandfly
Answer: B: Sandfly 
Explanation: Ans: b (sand fly) Ref;Park, 19 ed, 256Kala azar is transmitted by sandfly (phlebotomus).They are responsible for various diseases in humans:Kala azar or visceral leishmaniasisCutaneous leishmaniasisMuco-cutaneous leishmaniasisAnthroponotic cutaneous leishmaniasisZoonotic cutaenous leishmaniasisPost kala azar dermal leishmaniasis (PKDL) etc..Arthropod-borne diseases:SandflyKala azarOriental soreOraya feverSandfly feverHard tickTick typhusTick paralysisViral encephalitisViral hemorrhagic feverKFDTse tse flySleeping sickness TularemiaHuman babesiosisLouseEpidemic typhus Relapsing feverTrench feverPediculosisSoft tickQ feverRelapsing feverTrombiculidScrub typhusRat fleaBubonic plague, Endemic typhusChiggerosisMiteRickettsialpoxHymenolepsis diminutaItch miteScabiesBlack flyOnchocerceriasisCyclopsGuniea worm and fish tape worm (Diphyllobothrium latum)ReduvidbugChagas disease