which option is the best example of a central idea?

knowledge can be a powerful mover of change
a group of baseball players change their minds about thier coach after they learn why hes so strict
change can be a diffficult process
the story takes place in a small town and includes a conflict between a baseball coach and his players

The best example of a central idea is "knowledge can be a powerful mover of change." This central idea encapsulates the theme that acquiring new information or understanding can lead to significant changes in individuals or situations.