Which theme is best suggested by jerry's accomplishment in "through the tunnel"?

How does the narrator’s knowledge of his postapocalyptic world in "by the waters of babylon” affect his reactions to the different settings? it motivates him to make up stories about the world and the places he explores. it has caused him to fear the settings outside the hill country, so he tries to avoid them. it forces him to reject what he sees and experiences himself at various locations in the story. it makes him cautious about new settings yet open-minded and critical of what he experiences.

It was a bitter cold saturday morning ,the young track star dressed for his daily five mile run

If your job was precarious, would you look for a new one? explain.