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 aspartame. this diet will prevent the development of an intellectual disability. sam most likely has which condition?

Sam is suffering from Phenylketonuria. The hereditary disorder causes the level of Phenylalanine in the body to increase. Phenylalanine is obtained from protein foods and a range of artificial sweeteners such as aspartame. If a person's blood contains high levels of Phenylalanine, intellectual disability can arise.

i think the answer is b.