Titles are a powerful tool for writers, Think about all the meaning carried by the titles "Long Way Down" and "The Cold Equations in two complete sentences entante le of chapter 5 and how it relates to the message of the chapter.

d) the narrator even suggested that the white whale, moby d, was ubiquitous and present in every ocean at every moment.  

the purpose of the heading in the passage is to identify who is telling the story.

this excerpt is part of the book sugar changed the world (2010) written by marc aronson and marina budhos. as the book has been written by two people, the heading "marc" indicates that this specific excerpt is being narrated by aronson. in the fragment, marc describes his grandfather's story after hearing it from his cousin. however, there are other excerpts where budhos is the one that tells the story of her family.

aronson and budhos, who are husband and wife in real life, decided to write sugar changed the world when they found out how sugar, which had an important role in slavery and economy, changed their ancestors' lives.

second one- because has facts and not opinion