Paul rolled along the sidewalk, crossing the cracks rhythmically until he reached the ramp, where he let his momentum carry him halfway up. He pushed against the wheels as he approached the corner, slowly. This doorway was his least favorite in the entire school. It was difficult to turn the 90-degree corner and then open the door into the same three feet of space that he and his wheelchair occupied. But after three years, he'd found that if he didn't turn the corner completely, he could grab the door and open it without hitting his chair and without having to back up.
Answer the question
Paul was...
A. compulsive
B. antisocial
C. persistent
D. lighthearted