Decomposition is inhibited during :

Options

A. Warm and moist environment
B. Low temperature and anaerobiosis
C. Warm and aerobic environment
D. Aerobic and slightly acidic condition

Answer

### Step-by-Step Solution:

1. **Understanding Decomposition**:
- Decomposition is the process where complex organic matter is broken down into simpler inorganic substances. This process is essential for nutrient cycling in ecosystems.

2. **Factors Affecting Decomposition**:
- The rate of decomposition is influenced by various environmental factors, primarily temperature and the presence of oxygen.

3. **Effect of Temperature**:
- Higher temperatures generally increase the rate of decomposition. This is because warmer conditions promote microbial activity, which accelerates the breakdown of organic materials.
- Conversely, lower temperatures slow down the decomposition process. Microbial activity decreases in cold conditions, leading to a slower breakdown of organic matter.

4. **Effect of Oxygen**:
- The presence of oxygen (aerobic conditions) enhances decomposition as aerobic microorganisms thrive and effectively break down organic matter.
- In contrast, anaerobic conditions (absence of oxygen) inhibit decomposition. Under these conditions, the rate of breakdown is significantly reduced as fewer microorganisms can survive and function.

5. **Analyzing the Options**:
- **Option 1**: Warm and moist environment - This would promote decomposition.
- **Option 2**: Low temperature and anaerobiosis - This combination would inhibit decomposition due to reduced microbial activity and lack of oxygen.
- **Option 3**: Warm and aerobic environment - This would enhance decomposition.
- **Option 4**: Aerobic and slightly acidic condition - This would also promote decomposition.

6. **Conclusion**:
- Based on the analysis, the correct answer is **Option 2: Low temperature and anaerobiosis**. This combination inhibits the decomposition process.