Approximately what proportion of all cases of intellectual disability disorder can be accounted for by genetic abnormalities?
A)over 90%
B)about three quarters (75%)
C)about half
D)about one quarter (25%)
E)less than 10%

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The Answer of Approximately what proportion of all cases of intellectual disability disorder can be accounted for by genetic abnormalities?
A)over 90%
B)about three quarters (75%)
C)about half
D)about one quarter (25%)
E)less than 10%

Approximately What Proportion of All Cases of Intellectual Disability Disorder