It could be said that Jim is impulsive (Option D). It might be because he is just a young boy who is willing to adventure. He starts a journey as he was researching for treasure with pirates. he is portrayed as a child who relied on the people around him while being a child which lead him to maturity. Later on, he becomes smarter.
Not sure exactly what you are asking for, but when you refuse permission, an appropriate response would be:
"I do not wish for my child to participate in today's events as I do not feel it will benefit his learning."
A good response to give permission:
"I give permission for my child to participate in today's events."
Metaphor I think, are there options?