The answers are 1 and 2. Hope this helps! :)
The authors’ purpose in the conclusion of the prologue of the passage from Sugar Changed the World is supported by the following topics:
A. It introduces the topic that will be addressed next.
B. It provides information about the authors.
Through their personal family histories with sugar, husband and wife Marc Aronson and Marina Budhos frame the book introducing themselves and the topic to the reader. In this prologue the authors provide some estimules to invite readers to taste the sweetness and bitterness of this global history lesson.
If by Fredo, you mean Fredo Corleone I think he is a believable character.
He has many characteristics that are needed in a novel. For a start, he was treated as the baby of the family because of a out of pneumonia as a child and he is considered weaker and less intelligent than his siblings.
He is also considered the black sheep of the family as he loves being part of the Corlene family and what it comes with it ( money and women) but he doesn't like the responsabilities that come with the name.
He craves respect but he doesn't earn it as his siblings and father are continously covering for his mistakes.