What does the myelin sheath do?

choices A and C
help electrical impulses travel through neurons
delay mental development as needed or is appropriate
cover the neurons with a fatty coating

What does the excerpt tell about the narratos mental shift i suppose i shall have to get back behind the pattern when it comes night,and that is hard? @a.the narraor believes that the wallpaper is beatiful b.he believes that the woman in the wallpaper will attack him when he sleeps c.the narrator believes that he cant escape from the windws with the bars d.that the narrator was once behind the wallpaper