Apple is to tree as grape is to vine.
Hair = simile
apples = generalization
(e) all of these arose from the chaos left over world war 1.
ok? (*゜ー゜*)
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To create a better image in the reader's mind. The use of imagery creates a better picture when the reader imagines the setting. Since when reading everyone thinks of a different picture imagery helps to create a picture closer to what the author imagined.