Question

sort the characteristics of flat characters and round characters.
have complex personalities
are standard types
represent abstract ideas
can grow or change
display a range of emotions
are static and unchanging

Explanation:

Flat characters are simple, often representing a single trait or idea. They are static and don't change much. Round characters are complex, with multiple traits and emotions, and can grow or change over the story.

Answer:

Flat Characters: are standard types, represent abstract ideas, are static and unchanging.
Round Characters: have complex personalities, can grow or change, display a range of emotions.