During the Development of Your Four-Year-Old Nephew's Brain, a Number

Multiple Choice

 During the development of your four-year-old nephew's brain, a number of neurons died and many synapses were pruned. As a result, when he is older, he will

A) suffer from intellectual disability.
B) probably be totally normal.
C) not be able to learn to talk.
D) have normal speech, but his intellectual functioning will be lower than normal.