C. the idea of "home" in the Wizard of Oz. A motif has a symbolic meaning and is used to illustrate the theme. Of course in the Wizard of Oz the theme is "there is no place like home" The home is symbolic. The other options are all themes. They are main idea statements that suggest an author's viewpoint. For example, the inevitable loss of innocence. This is a common theme especially in young adult literature where the main character often has to "grow up" in order to deal with the conflict.