I assumed the opposite. D&D is cooperative imagination, something I would think would be difficult for an autistic individual. If you strongly agreed with that, your score would be lower. The 40 is not the person's score but the number of the question.
The question is about kids on purpose because children play games of pretend differently than how adults play D&D. You can be VERY autistic and find D&D to be rewarding because it's not JUST about collaborative imagination.