Final answer:
Jason's preference for solitary activities like reading and listening to music over socializing in large groups indicates that he exhibits an amiable personality, which is reserved and quiet.
Step-by-step explanation:
Based on the description that Jason would rather read or listen to music on his own than sit around with a large group and talk, Jason is exhibiting traits that are not highly social or dominant. This suggests that he is not particularly expressive or focused on directing others as a driver might be. Therefore, the most suitable answer would be amiable, as this personality is typically reserved, quiet, and enjoys solitary activities, unlike the more interactive and socially-focused expressive or driver types.