Coccidiosis in poultry is caused by

Options

A. protozoans parasite
B. nematode parasite
C. virus
D. tape worms

Answer

### Step-by-Step Solution:

1. **Understanding Coccidiosis**: Coccidiosis is a disease that affects poultry, primarily caused by a specific type of parasite.

2. **Identifying the Causative Agent**: The causative agent of Coccidiosis is a microscopic parasite known as coccidia.

3. **Classifying the Parasite**: Coccidia belongs to the group of organisms known as protozoans. Therefore, it is classified as a protozoan parasite.

4. **Transmission of the Disease**: Coccidiosis is transmitted through the droppings of infected birds, which can contaminate the environment and infect other birds.

5. **Genus of the Parasite**: The coccidia that cause Coccidiosis in poultry belong to the genus Eimeria.

6. **Conclusion**: Based on the classification and characteristics of the parasite, the correct answer to the question "Coccidiosis in poultry is caused by" is Option A: Protozoan Parasite.

### Final Answer:
Coccidiosis in poultry is caused by a protozoan parasite.

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