The correct option is B Leishmania - Chagas disease
Malaria is a mosquito borne infectious disease of humans and other animals caused by parasitic protozoans. The disease is transmitted most commonly by an infected female Anopheles mosquito.
Chagas disease is a tropical parasite disease caused by the protozoa Trypanosoma cruzi. It is spread mostly by insects known as 'kissing bugs'.
Sleeping sickness is a parasitic disease of humans and other animals. It is caused by protozoa of the species Trypanosoma brucei. It is transmitted by tsetse fly (Glossina).
Filariasis is a parasitic disease caused by an infection with roundworms Wuchereria bancrofti. These are spread by culex mosquitoes. Thus, the correct answer is option B.