Introduction:
Milk is a nutritious beverage that contains several essential nutrients, including vitamins. However, not all vitamins are present in milk. In this case, the vitamin that is not found in milk is Vitamin C.

Explanation:
Here is a detailed explanation of why Vitamin C is not present in milk:

1. Vitamin C:
Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that is essential for various bodily functions. It acts as an antioxidant, helps in the production of collagen, supports the immune system, and aids in the absorption of iron. Some natural sources of Vitamin C include citrus fruits (oranges, lemons), strawberries, kiwis, bell peppers, and broccoli.

2. Milk and Vitamin C:
Milk, on the other hand, is not a significant source of Vitamin C. This is because Vitamin C is a highly sensitive vitamin that can easily be destroyed by heat, light, and oxygen. The pasteurization process that milk undergoes can lead to a significant loss of Vitamin C content. Additionally, milk is not derived from plant sources, which are generally higher in Vitamin C compared to animal products.

3. Other Vitamins in Milk:
While milk may not be a good source of Vitamin C, it does contain other essential vitamins. For example:

- Vitamin A: Milk is a rich source of Vitamin A, which is important for vision, immune function, and cell growth.

- Vitamin B1 (Thiamine): Milk contains small amounts of Vitamin B1, which is essential for converting food into energy and maintaining a healthy nervous system.

- Vitamin D: Milk is often fortified with Vitamin D, which is important for bone health and calcium absorption.

Conclusion:
In conclusion, milk does not contain Vitamin C. While milk is a nutritious beverage and a good source of various vitamins, it is important to consume a balanced diet that includes other food sources of Vitamin C to meet the recommended daily intake. Including fruits and vegetables that are high in Vitamin C can help ensure an adequate intake of this essential nutrient.