Assertion :- Stringent cleanliness and hygiene are of paramount importance while milking, storage and transport of milk & milk products.
Reason:- Any kind of microbial infection can cause undesired modification in milk & milk products.

Options

A. If both Assertion & Reason are True & Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.

Answer

To solve the assertion and reason question, we will analyze both statements step by step.

### Step 1: Analyze the Assertion
The assertion states: "Stringent cleanliness and hygiene are of paramount importance while milking, storage, and transport of milk & milk products."

- **Explanation**: This statement emphasizes the importance of maintaining high standards of cleanliness and hygiene in all processes related to milk production. This includes the milking process, storage, and transportation. Cleanliness is crucial to prevent contamination and ensure the quality of milk and its products.

### Step 2: Analyze the Reason
The reason states: "Any kind of microbial infection can cause undesired modification in milk & milk products."

- **Explanation**: This statement highlights that microbial infections can lead to changes in the quality of milk. Microorganisms can cause spoilage, fermentation, and other undesirable changes, which can affect the taste, smell, and safety of milk products.

### Step 3: Determine the Truth of Each Statement
- Both the assertion and the reason are true. Stringent cleanliness is indeed essential to prevent microbial infections, which can modify the quality of milk.

### Step 4: Establish the Relationship Between Assertion and Reason
- The reason provides a valid explanation for the assertion. If cleanliness and hygiene are not maintained, microbial infections can occur, leading to undesired modifications in milk and milk products.

### Conclusion
Both the assertion and the reason are true, and the reason correctly explains why the assertion is important. Therefore, the correct answer is that both statements are true, and the reason is the correct explanation of the assertion.

### Final Answer
The correct answer is: **Option 1** (Both assertion and reason are true, and reason is the correct explanation of assertion).

---