Why does Janie choose to tell her story only to her best friend Pheoby? How does Pheoby respond at the end of Janie's tale?

Pheoby is Janie's best and only lifelong friend. Due to the responsibilities of her marriage, Pheoby is unable to adventure the way that Janie does. Pheoby represents the everyday person, the audience; just as Janie tells her story to Pheoby, Hurston tells the story to her reader. At the end of the novel, Pheoby tells us that Janie's story has made her grow ten feet taller and has encouraged her to go fishing. Hurston, through Pheoby, asserts her desire for the readers of her novel to be mobilized into action through Janie's story just as Pheoby has been.