Who is bored and just want to talk

Can someone explain this to me clearly plz

Which sentence would not be appropriate for an essay or formal speech? a) most of the titles of faulkner's novels are references to the bible or to the works of william shakespeare. eliminate b) some critics believe that faulkner's novel the sound and the fury is the best novel of his entire career. c) the novels of william faulkner are way too hard to read, yo, filled with all these frustrating changing narrators! d) william faulkner traveled all the way from his home state of mississippi to sweden in order to make his nobel prize acceptance speech.

London includes a quote about john thornton as he is observing hal attempt to motivate the exhausted dogs "it was idle, he knew, to get between a fool and his folly". if the word "idle" is defined as "of no real worth, importance, or significance", what does this statement mean with regard to hal? who is the fool? what is hal's folly? why would john thornton think it of no real worth or useless to intervene?