Yeast is used in the production of

Options

A. sugar
B. alcohol
C. hydrochloric acid
D. oxygen

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks about the production process in which yeast is used.

2. **List the Options**: The options provided are:
- A) Sugar
- B) Alcohol
- C) Hydrochloric acid
- D) Oxygen

3. **Understand Yeast's Role**: Yeast is a microorganism that plays a crucial role in various fermentation processes.

4. **Analyze Each Option**:
- **Option A (Sugar)**: Yeast does not produce sugar; rather, it consumes sugar during fermentation.
- **Option B (Alcohol)**: Yeast is primarily used in the fermentation process to convert sugars into alcohol.
- **Option C (Hydrochloric acid)**: Yeast is not involved in the production of hydrochloric acid.
- **Option D (Oxygen)**: Yeast does not produce oxygen; it typically operates in anaerobic conditions during fermentation.

5. **Determine the Correct Answer**: Based on the analysis, the correct answer is **Option B (Alcohol)**, as yeast is used in the fermentation process to produce alcohol.

6. **Conclusion**: Therefore, yeast is used in the production of alcohol through the fermentation process.

**Final Answer**: Option B (Alcohol)

---