Which of the following is a prefix?

A. pro
B. -or
C. love

Which effect does the author achieve through the story's setting? rain pelted the window of the apartment, which was empty except for one person: randel. he had been setting in his easy chair with a book on his lap for an hour but hadn't read a single word. he listened to the rain. he looked at the empty cubbyhole here she would always put her shoes, which now sat empty. he signed.