Which trace element plays a crucial role in the functioning of the immune system, particularly in the activation of T-cells?

A Selenium
B Chromium
C Molybdenum
D Zinc ✓

Explanation

Zinc is an essential trace element that plays a critical role in the functioning of the immune system, particularly in the activation of T-cells, which are vital for cell-mediated immunity.

Mnemonic

Zinc = Zeroes In On Cell-mediated Immunity Now

Source

Immunology textbooks
Minerals, and Trace Elements Minerals and Trace Elements Zinc and Immune Function Medium MEDICAL Confidence: high