Which trace element is essential for the proper functioning of the immune system, particularly in the activation of T-cells?

A Zinc ✓
B Copper
C Selenium
D Chromium

Explanation

Zinc is crucial for immune function, especially in T-cell activation, which is vital for the adaptive immune response.

Source

Journal of Nutrition
Minerals, and Trace Elements Minerals and Trace Elements Immune Function and Zinc Medium MEDICAL Confidence: high