He 'd made himself a makeshift sling out of some old linens from his parent 's closet . He left his house , not bothering to shut the door , and began to walk north towards the hills that bordered the city . He 'd stay there until the planet devoured itself . He 'd stay there until there was nothing left .

Question: What 's a possible reason he left his house ?
Answer: None of the above choices .Because he did n't want to live there anymore .Because he did n't bother to shut the door .Because there were old linens in his parents ' closet .