The answer is: A flat static character stays the same even though there is conflict in the story.
This means that the character does not develop or change or is effected by events that take place in the story, they remain the same. Their personality does not change throughout the story. They are relatively uncomplicated characters.
I think the answer is characterization (I originally said plot but I just realized that I made a mistake when I was reading. Sorry about that! Hope I didn't mess anything up for you.) :D
B. Belle becomes less excited as the story goes on, until her excitement for bike riding disappears.
