Acetic acid is produced by the use of micro-organismi called

Options

A. Aspergillus niger
B. Acetobacter acet
C. Clostridium butyline
D. Lactobacillus bulgaricus

Explanation

To answer the question "Acetic acid is produced by the use of microorganisms called," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question is asking for the specific microorganism responsible for the production of acetic acid.

2. **Identify the Options**: The options provided are:
- Aspergillus niger
- Acetobacter acetii
- Clostridium butylicium
- Lactobacillus bulgaricus

3. **Analyze Each Option**:
- **Aspergillus niger**: This is a fungus known for producing citric acid, not acetic acid.
- **Acetobacter acetii**: This is a bacterium specifically known for converting ethanol into acetic acid through fermentation. This is the correct answer.
- **Clostridium butylicium**: This bacterium is known for producing butyric acid, not acetic acid.
- **Lactobacillus bulgaricus**: This bacterium is primarily associated with the production of lactic acid, not acetic acid.

4. **Conclusion**: Based on the analysis, the microorganism that produces acetic acid is **Acetobacter acetii**.

### Final Answer:
Acetic acid is produced by the use of microorganisms called **Acetobacter acetii**.

---