Which trace element acts as a cofactor for the enzyme glutathione peroxidase, helping to protect cells from oxidative damage?

A Selenium ✓
B Chromium
C Molybdenum
D Fluoride

Explanation

Selenium is a trace element that acts as a cofactor for the enzyme glutathione peroxidase, which helps protect cells from oxidative damage.

Source

Journal of Nutrition
Minerals, and Trace Elements Minerals and Trace Elements Antioxidant Minerals Medium MEDICAL Confidence: high