Cholera is due to

Options

A. Protozoan
B. Fungus
C. Virus
D. Bacterium

Answer

**Step-by-Step Solution:**

1. **Identify the Disease**: The question asks about cholera, a well-known infectious disease.

2. **Determine the Causative Agent**: To answer the question, we need to identify what causes cholera. The options given are protozoa, fungus, virus, and bacterium.

3. **Research the Causative Microorganism**: Cholera is caused by a specific bacterium. The bacterium responsible for cholera is called *Vibrio cholerae*.

4. **Understand the Disease Mechanism**: Cholera is a bacterial disease that primarily causes severe diarrhea and dehydration. It is typically transmitted through contaminated water.

5. **Recognize the Severity**: If left untreated, cholera can be fatal due to the severe dehydration it causes.

6. **Select the Correct Option**: Based on the information gathered, the correct answer to the question "Cholera is due to" is that it is caused by a bacterium.

**Final Answer**: Cholera is due to a bacterium, specifically *Vibrio cholerae*.

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