A. Lead
A.
B. Iron
B.
C. Zinc
C.
D. Chloride
D.
Correct Answer: C
সঠিক উত্তর: C
Explanation
ব্যাখ্যা
Several nutrient deficiencies can lead to a weakened immune system, making individuals more susceptible to infections. Deficiencies in vitamin A, C, D, E, B vitamins, and minerals like zinc and iron can compromise immune function.