Kala azar used and transmitted respectively by
Leishmania and Phlebatomus
The correct option is A.
Explanation of correct answer:
Explanation of incorrect answers:
Option B: Trypanosoma and sandfly
Option C: Leishmania and tsetse fly
Option D: Trypanosoma and Glossina palpalis
Final answer: Kala-azar used and transmitted respectively by Leishmania and Phlebatomus