Explanation:

Let’s break it down:

- Vitamin C (Option 1)

- This one’s water-soluble. Your body doesn’t store it, so you need it from food every day.

- It helps with the immune system, wound healing, and keeping your skin and blood vessels healthy.

- Vitamin A

- This is fat-soluble.

- Your body stores it, mostly in your liver. It’s key for vision and immune function.

- Vitamin K

- Also fat-soluble.

- It helps your blood clot (so you don’t bleed too much from a small cut).

- Vitamin D

- Another fat-soluble vitamin.

- It helps keep your bones and teeth strong, since it helps you absorb calcium.

So, if you’re picking the water-soluble one, Vitamin C is absolutely it. The other three are all fat-soluble—your body hangs onto them, unlike Vitamin C.