Tim, a 27-year-old man, has unusually narrow shoulders, low muscle mass, and has no facial and body hair. His doctor recently prescribed testosterone replacement therapy to him. Tim is most likely suffering from:

A) phenylketonuria (PKU) .
B) cystic fibrosis.
C) Klinefelter syndrome.
D) Huntington's disease (HD) .

Klinefelter Syndrome

A genetic condition in males characterized by the presence of an extra X chromosome, leading to various developmental and physical differences.

Testosterone Replacement Therapy

A medical treatment where testosterone is prescribed to individuals, typically to address issues related to low testosterone levels, such as certain medical conditions or aging.

Phenylketonuria (PKU)

An inherited metabolic disorder characterized by the inability to break down the amino acid phenylalanine, leading to intellectual disability and other health issues if untreated.