Preventive and control measures adopted for the storage of grains include

Options

A. strict cleaning
B. proper disjoining
C. fumigation
D. All of these

Explanation

### Step-by-Step Solution:

1. **Understanding the Importance of Grain Storage**:
- Grains are essential food resources that need to be stored properly to prevent spoilage and damage.

2. **Identifying Storage Locations**:
- Grains are typically stored in godowns (warehouses) or large tanks designed for grain storage.

3. **Recognizing Susceptibility to Damage**:
- Grains are vulnerable to damage from rodents and fungal infections, especially if they contain moisture.

4. **Cleaning Grains**:
- It is crucial to clean the grains thoroughly before storage to remove any impurities and reduce the risk of fungal growth.

5. **Cleaning the Storage Area**:
- The storage area (godown or tanks) must also be cleaned properly to eliminate any pests or contaminants.

6. **Ensuring Proper Sealing**:
- The storage facilities should be well-sealed to prevent rodents and other pests from entering. This includes checking for holes or gaps.

7. **Implementing Fumigation**:
- Fumigation, which involves spraying a protective chemical in the storage area before storing the grains, can help in preventing pest infestations and fungal infections.

8. **Conclusion**:
- All these preventive and control measures are essential for the effective storage of grains. Therefore, the correct answer to the question is that all the mentioned measures are important.