The disease caused by Trypanosoma gambiense is

Options

A. Sleeping sickness
B. kala-azar
C. Diptheria
D. Dysentery

Answer

### Step-by-Step Solution:

1. **Identify the Pathogen**: The question asks about the disease caused by *Trypanosoma gambiense*. This is a protozoan parasite.

2. **Recognize the Disease**: *Trypanosoma gambiense* is known to cause a specific disease. This disease is commonly referred to as African trypanosomiasis.

3. **Common Name of the Disease**: African trypanosomiasis is also known as "sleeping sickness." This name is derived from the symptoms of the disease, which can include severe sleep disturbances.

4. **Transmission**: The parasite is transmitted to humans through the bite of the tsetse fly, which is found in rural areas of Africa.

5. **Review Options**: If presented with multiple-choice options, you would identify "sleeping sickness" as the correct answer, while ruling out other diseases such as kala azar, diphtheria, and dysentery, which are caused by different pathogens.

6. **Conclusion**: Therefore, the disease caused by *Trypanosoma gambiense* is confirmed to be sleeping sickness.