There are 5 parts of the plot. Exposition, Rising Action, Climax, Falling Action, and Resolution.
Explanation:
No matter how perfect this place (Utopia) would be, there would still be death and the need for cemeteries. This part of the book is the Exposition - which introduces why they need a cemetery.
An effective argumentative essay addresses what the other side might say and explains why that point of view is wrong. This is called the counterclaim.