The correct answer is A. Klinefelter syndrome
Explanation:
Genotype XXY occurs when there are two or even more chromosomes in an individual male, which is an abnormality because male you have only one X chromosome and one Y chromosome, different from females that have two X chromosomes. This particularity in genetics is knowne as the Klinefelter syndrome because this was named after Harry Klinefelter who was the first person to officially describe and report genotype XXY. Additionally, this often leads to infertility and other consequences in the body. Thus, the genotype XXY corresponds to the Klinefelter syndrome.
