The bacteria that cause botulism is Clostridium botulinum. It is

Options

A. obligate anaerobic
B. endospore producing
C. exotoxin producer
D. all of the above

Answer

To answer the question about Clostridium botulinum, which is the bacteria that causes botulism, we will analyze the characteristics of this bacterium step by step.

### Step-by-Step Solution:

1. **Identify the Bacterium**:
- The bacterium responsible for botulism is **Clostridium botulinum**.

2. **Understanding Botulism**:
- Botulism is a serious illness caused by food poisoning due to the ingestion of a toxin produced by Clostridium botulinum.

3. **Characteristics of Clostridium botulinum**:
- **Obligate Anaerobic**:
- Clostridium botulinum is classified as an obligate anaerobe, meaning it cannot grow in the presence of oxygen. This is a crucial characteristic of this bacterium.

- **Endospore Producing**:
- This bacterium produces endospores, which are non-reproductive structures that help the bacteria survive in unfavorable conditions, such as lack of nutrients.

- **Exotoxin Producer**:
- Clostridium botulinum produces a potent toxin known as botulinum toxin, which is released into the environment and is responsible for the symptoms of botulism.

4. **Conclusion**:
- Given the characteristics discussed, Clostridium botulinum is:
- Obligate anaerobic
- Endospore producing
- Exotoxin producer
- Therefore, the correct answer to the question is **all of the above**.