Review Question - QID 214274

A 4-year-old boy is brought to the emergency department after he was witnessed swallowing a battery. On presentation, his parents say that he has always had a problem with eating objects that he finds in the house, and he has been in the emergency department multiple times for this problem. He was found to have low muscle tone at birth and has had severe intellectual delay throughout childhood. He also has hard to control behavioral issues such as aggression against other children. Physical exam reveals an obese boy who does not follow instructions. A problem with which of the following chromosomes is most likely responsible for this patient's disorder?