Which of the following describes significance of fermentation?
(i)Prodyction of alcohol in brewing industry
(ii) Making of dough in baking industry
(iii) Curing of tea and tobacco
(iv) Production of vinegar by acteic acid bacteria

Options

A. (i),(ii) and (iii)
B. (i),(ii) and (iv)
C. (ii),(iii) and (iv)
D. (i),(ii),(iii) and (iv)

Explanation

To answer the question about the significance of fermentation, we need to analyze each of the provided options. Fermentation is a metabolic process that converts sugar to acids, gases, or alcohol using microorganisms under anaerobic conditions. Let's evaluate each option step by step.

### Step-by-Step Solution:

1. **Understanding Fermentation**:
- Fermentation is a metabolic process that involves the conversion of organic substances (like sugars) into other products (like alcohol or acids) through the action of enzymes produced by microorganisms.

2. **Evaluating Option (i)**:
- **Production of alcohol in brewing industry**:
- This is a well-known application of fermentation. Yeasts ferment sugars to produce alcohol, which is essential in brewing.
- **Conclusion**: This option is significant in fermentation.

3. **Evaluating Option (ii)**:
- **Making of dough in baking industry**:
- In baking, yeast ferments sugars in the dough, producing carbon dioxide gas that causes the dough to rise.
- **Conclusion**: This option is also significant in fermentation.

4. **Evaluating Option (iii)**:
- **Curing of tea and tobacco**:
- The fermentation process is used in the curing of tea leaves and tobacco to develop their flavors and aromas.
- **Conclusion**: This option is significant in fermentation.

5. **Evaluating Option (iv)**:
- **Production of vinegar by acetic acid bacteria**:
- Acetic acid bacteria ferment ethanol to produce vinegar, which is a direct result of fermentation.
- **Conclusion**: This option is significant in fermentation.

6. **Final Conclusion**:
- All four options describe significant applications of fermentation. Therefore, the correct answer is that all options (i), (ii), (iii), and (iv) are significant in fermentation.

### Final Answer:
All of the following describe the significance of fermentation:
(i) Production of alcohol in brewing industry
(ii) Making of dough in baking industry
(iii) Curing of tea and tobacco
(iv) Production of vinegar by acetic acid bacteria