Answer:
C. inability to convert phenylalanine to tyrosine
Explanation:
Phenylketonuria (PKU) is a genetic disorder whereby the body fails or has the decreased ability to metabolize an amino acid called phenylalanine. If it goes untreated, PKU can cause intellectual disability, seizures, behavioral problems, and various mental disorders. Other effects of PKU on newly born babies may have heart complications, an undersized head, and small weight
