Final answer:
An allegory is a literary device that uses symbolism and metaphor to convey a deeper meaning or message. 'The Wonderful Wizard of Oz' is an example of an allegory where characters and events represent abstract ideas or moral qualities.
Step-by-step explanation:
An allegory is a literary device that uses symbolism and metaphor to convey a deeper meaning or message. In an allegory, characters, settings, and events are often used to represent abstract ideas or moral qualities. One classic example of an allegory is 'The Wonderful Wizard of Oz' by L. Frank Baum, where the journey of Dorothy and her companions through the Land of Oz represents the quest for self-discovery and personal growth.
Learn more about Allegory in 'The Wonderful Wizard of Oz'