Not Sure of the Meaning of the Prompt

Which book’s world would be the worst to live in?

I wasn’t sure what the prompt was asking, so my first thought went to Silas Marner. Then another idea hit me: what about a world where temperatures keep rising and scattered groups of survivors struggle to cope with the heat and each other? That book exists. I wrote it. I called it The Survivors, and honestly, it’s a strange, frightening place where people do disturbing, almost unimaginable things just to stay alive.

Yes, it is available by Amazon Kindle books.