An Individual Develops Intellectual Disability Due to a Disorder Called

Multiple Choice

An individual develops intellectual disability due to a disorder called phenylketonuria (PKU) . Which of the following is most likely to have occurred to cause intellectual disability?

A) The replacement of myelin by hard fibrous tissue in the individual's neurons
B) The inhibition of normal myelin development in the individual's brain
C) The destruction of neurons in the individual's brain due to the transfer of myelin to the soma
D) Myelination of the prefrontal matter of the individual's brain