Answer:
B. Billy's response to the ghost shows that he is not easily frightened.
Step-by-step explanation:
It is night, dead silence is interrupted by sounds of someone forcingly coming in. The ghost appears looking frightening, angry, evil, and violent. We expect that little Billy would be scared and that he will start crying, but instead of that, he nonchalantly responded to the ghost that he is too busy now for the ghost`s plans and curled up back to sleep. So Billy is not too tired to deal with the ghost, he is just not interested because he has better things to do right now. As for Billy being the ghost`s enemy, that is obvious because the ghost will consider anyone living in his former house as his enemy and that does not help to develop the main character, nor his coming back and possible anger problems help develop the main character.