How do the boys respond to the potential ghost in the house? A. They tell their mother, so she doesn’t call the police.
B. They keep it from their mother so as not to worry her.
C. They try to find out what the ghost wants.
D. They ignore the ghost, hoping that it will go away on its own.

B. They keep it from their mother so as not to worry her.

Explanation:

James Thurber's short story "The Night The Ghost Got In," tells the story of how a ghost created havoc in the narrator's household one late night. The story also has some comic scenes with all the drama it brought in the neighborhood.

While the rest of the family were asleep, the narrator was interrupted by the sound of someone around the dining area. He woke up his brother and both tried to observe the ghost. But then their mother woke up, initiating the first 'turbulence' of the night by throwing her shoe at the next-door neighbor's bedroom window. But they did not tell her about it, rather refusing to tell her anything which was why she tried to find out the reason for "all that running around downstairs".

Thus, the correct answer is option B.