This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Pediatrics
Deficiency of which element can lead to the syndrome of growth failure, anemia, and hypogonadism? 
Select and explain. 
A. Calcium, B. Copper, C. Zinc, D. Magesium
C: Zinc
Answer: C: Zinc 
Explanation: Zinc deficiency is characterized by growth retardation, loss of appetite, and impaired immune function. In more severe cases, zinc deficiency causes hair loss, diarrhea, delayed sexual maturation, impotence, hypogonadism in males, and eye and skin lesions. Reference: GHAI Essential pediatrics, 8th edition