Name one synthetic antioxidant.

Explanation

**Step-by-Step Solution:**

1. **Understanding Antioxidants:**
- Antioxidants are substances that prevent oxidation in molecules within cells. They combat free radicals, which can cause significant damage if present in excess.

2. **Identifying Synthetic Antioxidants:**
- Synthetic antioxidants are man-made compounds designed to inhibit oxidation and protect against the damaging effects of free radicals.

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