Those who failed to get past both doctors had to undergo a more thorough medical exam. The others moved on to the registration clerk, who questioned them with the aid of an interpreter: What is your name? Your nationality? Your occupation? Can you read and write? Have you ever been in prison? How much money do you have with you? Where are you going?

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.

noun phrase/ noun phrase/ verb phrase/ noun clause/ awnsers are in order to questions above