Articles kept in refrigerator for several days get spoilt due to

Options

A. Frequent electricity failures
B. Nonkilling of contaminant microorganisms
C. Slow conversion of starch to sugar
D. Slow breakdown of vitamins and proteins

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks why articles kept in the refrigerator for several days get spoiled.

2. **Refrigeration and Temperature**: Refrigerators maintain a low temperature which is designed to preserve food. The low temperature slows down the activity of bacteria and enzymes that cause spoilage.

3. **Effect on Microorganisms**: While refrigeration does not kill all bacteria, it makes them inactive. This means that the bacteria are still present but their activity is significantly reduced due to the cold environment.

4. **Enzymatic Activity**: Enzymes that contribute to food spoilage have an optimum temperature for activity. In a refrigerator, the lower temperature decreases the activity of these enzymes, which helps in preserving the food for a limited time.

5. **Duration of Preservation**: The safe refrigeration period for most food items is typically between 3 to 6 days. After this period, even though the bacteria are less active, they can still cause spoilage due to their slow decomposition activity.

6. **Conclusion**: The spoilage of food articles in the refrigerator after several days is primarily due to the decomposition activity of bacteria, which, although slowed down, is still occurring.

7. **Final Answer**: Therefore, the correct answer to the question is that articles kept in the refrigerator for several days get spoiled due to the decomposition activity of bacteria.