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

A Selenium
B Zinc ✓
C Copper
D Manganese

Explanation

Zinc plays a crucial role in immune function, including the activation of natural killer cells and T-cells, which are vital for fighting infections and diseases.

Mnemonic

Zinc = Zing → gives immune cells a 'zing' of energy

Source

World Health Organization (WHO) - Nutrition
Minerals and Trace Elements Immunology and Nutrition Zinc and Immune Function Easy MEDICAL Confidence: high