Final answer:
Some characters in literature are flat or static, serving as reference points for dynamic characters. They are one-dimensional figures that do not experience significant change throughout the story.
Step-by-step explanation:
Some characters in literature are flat or static because they serve as a reference point for dynamic characters to show their growth. Flat characters are often caricatures who represent a particular idea, human trait, or set of values. They are one-dimensional figures that can be easily summarized and do not experience significant change throughout the story. Flat or static characters can be used to provide comic relief, create tension and conflict, maintain a simple narrative, or avoid extensive character development.