vector of Trypanosoma/Trypanosomiasis is spread by

Options

A. Housefly
B. Tsetse fly
C. Sand fly
D. Culex.

Answer

To answer the question about the vector of Trypanosoma/Trypanosomiasis, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Disease**: The disease caused by Trypanosoma is known as Trypanosomiasis, commonly referred to as sleeping sickness.

2. **Identify the Causative Agent**: The specific species of Trypanosoma responsible for sleeping sickness is Trypanosoma gambiense.

3. **Determine the Vector**: The vector that spreads Trypanosoma gambiense is the tsetse fly, scientifically known as Glossina palpalis.

4. **Understand the Role of the Vector**: The tsetse fly transmits the parasite to humans through its bite. The parasite enters the bloodstream and can eventually affect the central nervous system, leading to symptoms like lethargy and sleep disturbances.

5. **Review Other Options**: Other potential vectors mentioned (housefly, sandfly, Culex mosquito) are associated with different diseases and are not responsible for the transmission of Trypanosomiasis.

6. **Conclude the Answer**: Therefore, the correct answer to the question is that Trypanosomiasis is spread by the tsetse fly (Glossina palpalis).

### Final Answer:
The vector of Trypanosoma/Trypanosomiasis is spread by the tsetse fly (Glossina palpalis).

---