There are many possible causes of Intellectual Disability; prenatal, perinatal, and postnatal factors. Which of the list below is not a prenatal…

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There are many possible causes of Intellectual Disability; prenatal, perinatal, and postnatal factors. Which of the list below is not a prenatal factor that could be a potential cause of ID. 

a. Maternal infections 

b. Environmental conditions 

c. Chromosomal abnormalities  

d. Metabolic & Nutritional disorders 

e. Brain Damage