Answer:
The correct answer will be option-B
Step-by-step explanation:
African sleeping sickness or African trypanosomiasis is the disease caused by the parasitic species of Trypanosoma genus called Trypanosoma brucei.
The disease spreads between mammals through tsetse fly by biting the mammals.
The parasite lives inside the fly and completes its life cycle when it enters the mammals or any other host. The parasite undergoes many morphological changes during their life cycle.
Thus, option- B is the correct answer.
African trypanosomiasis, or sleeping sickness.