At Birth, Sam Was Found to Have a Genetically Induced

Multiple Choice

At birth, Sam was found to have a genetically induced lack of an enzyme. He is placed on a diet, which includes not eating any foods containing the artificial sweetener aspartame. This diet will help prevent the development of an intellectual disability. Sam most likely has which condition?

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