Select the incorrect option from the following pairs of diseases and it causes.

Options

A. A. Wart disease of potato - Synchytrium endobioticum
B. B. Cholera - Vibrio cholerae
C. C. Polio - Coxiella bournetti
D. D. Tuberculosis - Mycobacterium tuberculosis

Explanation

To solve the question of identifying the incorrect option from the pairs of diseases and their causes, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the First Pair**:
- Disease: What disease of potato
- Cause: Skyntrium endobioticum
- **Evaluation**: This is correct. What disease of potato is indeed caused by Skyntrium endobioticum, also known as black scab.

2. **Identify the Second Pair**:
- Disease: Cholera
- Cause: Vibrio cholerae
- **Evaluation**: This is also correct. Cholera is caused by the bacterium Vibrio cholerae.

3. **Identify the Third Pair**:
- Disease: Polio
- Cause: Coxilla bornetti
- **Evaluation**: This is incorrect. Polio is caused by the poliovirus, not by Coxilla bornetti.

4. **Identify the Fourth Pair**:
- Disease: Tuberculosis
- Cause: Mycobacterium tuberculosis
- **Evaluation**: This is correct. Tuberculosis is caused by Mycobacterium tuberculosis.

5. **Conclusion**:
- After evaluating all pairs, the only incorrect option is the third pair (Polio caused by Coxilla bornetti). Therefore, the answer is option C.

### Final Answer:
The incorrect option is **C** (Polio caused by Coxilla bornetti).

---