Final answer:
In The Wonderful Wizard of Oz, the houses and the people's clothing in the city of Oz appear green due to the green glasses worn by Dorothy and her friends.
Step-by-step explanation:
In L. Frank Baum's novel, The Wonderful Wizard of Oz, the houses and the people's clothing in the city of Oz are depicted as green. The emerald green is not the true color of the city; however, Dorothy and her friends are made to wear green glasses to perceive everything as green. This emphasis on green illustrates a sharp contrast to the other parts of Oz which are depicted in different colors.
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