Matty is very shy, has long arms, and an underdeveloped penis. Based on this information, it is more likely that he has:

Question

Quizplus · Accepted Answer

Klinefelter's syndrome is characterized by the presence of an extra X chromosome in males, leading to symptoms such as reduced facial and body hair, longer limbs, and smaller testes which can result in a smaller penis size. Shyness can also be a characteristic due to social and developmental challenges. The other options do not match these specific characteristics as closely. Turner's syndrome affects females, Cri du chat syndrome has distinctive features not mentioned here, and Down syndrome has a different set of physical and cognitive symptoms.

Matty Is Very Shy, Has Long Arms, and an Underdeveloped