The definition of dyspeptic is a person with poor digestion, something that relates to poor digestion or a depressed person.
To prevent more work later
To ensure a proper works cited
To prevent any accusations of plagiarism
To ensure that all sources are always accessible
I can already tell you that you can eliminate the first two answers. Out with the old and in with the new and love can overcome all obstacles. I have not read the book, but I read a briefly summary of it online. After all it is about life and struggles. Life, consciousness, existence and finding hope. That's how I know it's D. The struggle to find faith is a difficult one but will ultimately be worth the fight Hope I helped.