Which of the following syndromes is a result of having an extra X chromosome in males?

Klinefelter Syndrome is characterized by the presence of one or more extra X chromosomes in males, resulting in a typical karyotype of 47,XXY or variations such as 48,XXXY. This condition can lead to various symptoms, including reduced testosterone levels, infertility, and the development of some secondary female characteristics, such as breast tissue development. The additional X chromosome affects male sexual development and can impact cognitive abilities. In contrast, Turner Syndrome is associated with females who have only one X chromosome (45,X) and results in a different set of symptoms, such as short stature and ovarian dysfunction. Androgen-insensitivity syndrome involves males with XY chromosomes but who are resistant to male hormones, resulting in female physical traits despite having a male genetic constitution. Super Male Syndrome, characterized by an additional Y chromosome (47,XYY), is unrelated to the presence of extra X chromosomes and can be associated with increased height and other physical features. Hence, Klinefelter Syndrome is the correct answer as it specifically relates to males with an extra X chromosome.