Question

which vitamin helps repair dna?
vitamin a
vitamin c
vitamin e
vitamin k

Explanation:

Vitamin C is an antioxidant that can contribute to DNA repair by protecting cells from oxidative stress - induced DNA damage and participating in enzymatic reactions related to repair. Vitamin A is mainly for vision and cell differentiation, vitamin E is an antioxidant but not as directly linked to DNA repair as vitamin C, and vitamin K is important for blood - clotting and bone health, not DNA repair.

Answer:

Vitamin C