Hat type of question can the bolded text you answer?

my social studies teacher, ms. galvez, rolled her eyes at me and i rolled my eyes back at her. the man was always coming down on me, just because i go through school firewalls like wet kleenex, spoof the gait-recognition software, and nuke the snitch chips they track us with.

interpretive
adaptive
evaluative
literal

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?