Assertion (A) : Now -a-days , chance of direct contact of the milk and their products with handlers is reduced.
Reason (R) : Much of these processes have become mechanised.

Options

A. Both A and R are correct and R is the correct explanation of A
B. Both A and R are correct but R is not the correct explanation of A
C. A is true but R is false
D. A is false and R is true

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**: The assertion states that the chance of direct contact between milk (and its products) and handlers has decreased in recent times. This implies that there is less human handling of milk during its processing and distribution.

2. **Understanding the Reason (R)**: The reason provided is that many of the processes involved in handling milk have become mechanized. This means that machines are now used to perform tasks that were previously done by humans.

3. **Historical Context**: In the past, milk was often collected and processed manually. Families would keep cows or buffaloes and handle the milk directly. This resulted in a higher chance of direct contact with handlers.

4. **Modern Practices**: Nowadays, large dairy companies (like Amul and Mother Dairy) collect milk from rural areas using machines. The milk is transported in bulk containers, minimizing the need for human contact during collection.

5. **Processing and Pasteurization**: Once collected, the milk undergoes various processes such as pasteurization and the addition of preservatives. These processes are largely automated, further reducing human contact.

6. **Conclusion**: Since the processes have become mechanized, the assertion that there is a reduced chance of direct contact with handlers is true. Additionally, the reason provided correctly explains why this reduction has occurred.

7. **Final Evaluation**: Both the assertion (A) and the reason (R) are correct, and R is the correct explanation of A. Therefore, the answer is that both A and R are correct, and R is the correct explanation of A.