## Core Concept
The question pertains to the mineral that exhibits similar antioxidant properties to vitamin E. Vitamin E is known for its role as an antioxidant, protecting cells from the damage caused by free radicals.

## Why the Correct Answer is Right
Selenium is a mineral that acts similarly to vitamin E in its antioxidant properties. It is a crucial component of the enzyme glutathione peroxidase, which helps reduce oxidative stress by converting harmful peroxides into water and alcohol, thereby protecting the cell membrane from oxidative damage. This mechanism mirrors the antioxidant action of vitamin E, which also protects cell membranes from oxidative damage.

## Why Each Wrong Option is Incorrect
**Option A:**
- This option is incorrect because, although essential, it does not have antioxidant properties similar to vitamin E.

**Option B:**
- This option is incorrect as it does not specifically relate to antioxidant functions comparable to vitamin E.

**Option C:**
- This option is incorrect because, while important for various bodily functions, it does not have a direct antioxidant action similar to vitamin E.

## Clinical Pearl / High-Yield Fact
A key point to remember is that selenium deficiency can lead to conditions such as Keshan disease (a cardiomyopathy) and Kashin-Beck disease (a joint and bone disorder), highlighting its importance in health. The relationship between selenium and vitamin E as antioxidants underscores the body's multifaceted approach to protecting against oxidative stress.

## Correct Answer Line
**Correct Answer: D. Selenium**