The question is asking to match List I with List II and select the correct answer using the given codes.

List I contains the names of vitamins, and List II contains their corresponding functions.

A. Vitamin A - The correct function for Vitamin A is essential for healthy skin and normal vision.

B. Vitamin C - The correct function for Vitamin C is that it assists in the absorption and metabolism of Calcium.

C. Vitamin D - The correct function for Vitamin D is essential for the formation of collagen.

D. Vitamin B12 - The correct function for Vitamin B12 is essential for red blood cell formation.

Matching these functions with the vitamins, we find that the correct answer is option 2: A B C D - 3 4 2 5.

The correct mapping of vitamins to their functions is as follows:

A. Vitamin A - Function 3 - Essential for healthy skin and normal vision

B. Vitamin C - Function 4 - Assists in absorption and metabolism of Calcium

C. Vitamin D - Function 2 - Essential for formation of collagen

D. Vitamin B12 - Function 5 - Essential for red blood cell formation

Therefore, the correct answer is option 2.