What the answer for this question for this paragraph?

The theme of a story can best be determined through which of the following? a. the story’s plot b. the book cover c. the authors name d. the reading level

What effect does mr. bullers point of view in paragraph 6

The best persuasive essay topics a.are the ones that are popular,that many other people are writing about b.are ones you feel strongly about and that can be backed up by outside sources c.are one you feel strongly about,whether or not there is outside evidence for support