Card 38 / 54: Most cases of mental retardation are caused by
A)
Genetic issues such as Down syndrome or fragile X syndrome
B)
Malnutrition
C)
The mother drinking during pregnancy
D)
A non-stimulating environment during infancy
Answer:
A) Genetic issues such as Down syndrome or fragile X syndrome
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Prof.John GabrieliNeuroscientist
MIT Massachusetts Institute of Technology
USA
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