Which trace element plays a critical role in the functioning of the immune system, wound healing, and protein synthesis, and its deficiency can lead to impaired growth and development?

A Selenium
B Chromium
C Molybdenum
D Zinc ✓

Explanation

Zinc is essential for the functioning of the immune system, wound healing, and protein synthesis, and its deficiency can lead to impaired growth and development.

Source

NCERT Class 12 Biology
Minerals and Trace Elements Trace Element Nutrition Zinc Medium MEDICAL Confidence: high