Aaron Is Seven Years Old, Is Larger Than Average for His

Multiple Choice

Aaron is seven years old, is larger than average for his age, and has a long, thin face and big ears. He has an intellectual disability, is hyperactive, and has a peculiar tendency to avoid eye contact with others. Aaron most likely has

A) Down syndrome.
B) fragile X syndrome.
C) phenylketonuria (PKU) .
D) cretinism.