Final answer:
Boom! is an example of onomatopoeia, a figure of speech that imitates the sound of what it describes.
Step-by-step explanation:
Boom! is an example of onomatopoeia. Onomatopoeia is a figure of speech in which words imitate or suggest the sound of what they describe. In this case, 'boom' is a word that imitates the sound of an explosion.
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