Trypanosoma is

Options

A. Nonpathogenic
B. Monogenetic
C. Digenetic
D. Facultative.

Answer

### Step-by-Step Solution:

1. **Identify the Organism**: The question asks about Trypanosoma, which is a genus of flagellated protozoa.

2. **Understand the Nature of Trypanosoma**: Trypanosoma is known to be a parasitic organism. It is responsible for diseases such as trypanosomiasis, commonly referred to as sleeping sickness in humans.

3. **Evaluate the Options**:
- **Non-pathogenic**: This option is incorrect because Trypanosoma is a pathogen that causes disease.
- **Monogenetic**: This option is also incorrect. Monogenetic parasites complete their life cycle in one host, while Trypanosoma requires two hosts.
- **Digenetic**: This option is correct. Trypanosoma is a digenetic parasite, meaning it requires two different hosts to complete its life cycle. The primary host is humans, and the secondary host is the tsetse fly (Glossina).
- **Facultative**: This option is incorrect as well. Trypanosoma is not considered a facultative parasite.

4. **Conclusion**: The correct answer is that Trypanosoma is a digenetic parasite.