Final answer:
The most appropriate diagnosis for Aaron's situation would be Gambling disorder, which is characterized by persistent and recurrent problematic gambling behavior that leads to significant impairment or distress. Aaron's excessive gambling and pawning of his electronic devices indicate a compulsive pattern of gambling associated with both physical and psychological dependence.
Step-by-step explanation:
The most appropriate diagnosis for Aaron's situation would be Gambling disorder. Gambling disorder is characterized by persistent and recurrent problematic gambling behavior that leads to significant impairment or distress. In Aaron's case, he has been engaging in excessive gambling and has resorted to pawning his electronic devices to fund his gambling. This behavior indicates a compulsive pattern of gambling that is associated with both physical and psychological dependence.