The correct answer is option 1, Vitamin A. Dim vision in the evening and night is typically caused by a deficiency of Vitamin A.

Vitamin A is essential for maintaining healthy vision, particularly in low light conditions. It is needed for the production of rhodopsin, a pigment found in the retina of the eye that allows us to see in dim light. A deficiency of Vitamin A can lead to a condition called night blindness, where individuals have difficulty seeing in low light conditions.

Let`s take a look at the other options to understand why they are not the correct answer:

Option 2: Vitamin E is primarily known for its antioxidant properties and is not directly related to vision.

Option 3: Vitamin B12 is important for the production of red blood cells and the functioning of the nervous system. While a deficiency in this vitamin can lead to various health issues, it is not specifically associated with dim vision in the evening or night.

Option 4: Vitamin C is important for immune function and collagen synthesis. Similar to Vitamin E, it is not directly involved in vision.

In summary, the deficiency of Vitamin A is responsible for dim vision in the evening and night.