Which of the following trace elements is essential for the proper functioning of the immune system, particularly in the activation of natural killer cells and the production of cytokines?

A Selenium
B Zinc
C Copper
D Molybdenum
Zinc plays a vital role in the immune system, including the activation of natural killer cells and the production of cytokines, which help fight off infections and diseases.
Journal of Nutrition and Immunology
Minerals and Trace Elements Immunology and Nutrition Zinc and Immune Function Medium MEDICAL Confidence: high