Sleeping sickness is a parasitic disease caused by Trypanosoma parasites. Trypanosoma is the correct answer.

Option 1: Histomonas is not the correct answer. Histomonas is a parasitic protozoan that causes a poultry disease called histomoniasis. It is not responsible for sleeping sickness.

Option 3: Angomonae is not the correct answer. Angomonae is not a known parasite or pathogen that causes any specific disease in humans or animals.

Option 4: Naegleria is not the correct answer. Naegleria is a type of free-living amoeba that can cause a rare but severe brain infection called primary amebic meningoencephalitis (PAM). It is not associated with sleeping sickness.

The correct answer is option 2. Trypanosoma parasites are responsible for causing sleeping sickness, which is also known as African trypanosomiasis. These parasites are transmitted to humans and animals through the bite of infected tsetse flies. The disease can cause a range of symptoms, including fever, headaches, joint pain, and sleep disturbances, which give the disease its name. If left untreated, sleeping sickness can progress to a more severe stage, affecting the central