The correct option is
B A- III, B- II, C- IV, D- I
A) African sleeping sickness is an insect-borne parasitic disease found in humans and other animals. It is caused by protozoa of the species Trypanosoma brucei of which Trypanosoma brucei gambiense (TbG) and Trypanosoma brucei rhodesiense (TbR) infect humans.
B) Oriental sore (Cutaneous leishmaniasis) is the most common form of leishmaniasis affecting humans. It is a skin infection caused by a single-celled parasite. Leishmania tropica is considered as an infectious disease that is naturally transmissible from humans to vertebrate animals.
C) Elephantiasis (Lymphatic filariasis) is a disease caused by parasitic worms called filarial worms. The worms are spread by the bites of infected mosquitoes. There are three types of worms which cause the disease: Wuchereria bancrofti, Brugia malayi, and Brugia timori, with Wuchereria bancrofti being the most common.
D) Malaria is an infectious mosquito-borne blood disease caused by a Plasmodium parasite. It is transmitted through the bite of the Anopheles mosquito in humans.
Hence, the correct match is A- III, B- II, C- IV, D- I.