It's D. Similes use like or as. Metaphor calls one thing another. And alliteration uses the same letter/ sound combination.
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No, that is not an onomatopoeia. That's more personification. Onomatopoeias are usually the sound the object makes. For example, "buzz!" is an onomatopoeia of a bee or a bug. You could phrase your sentence like this instead: "Crash!! The meteoroids slammed against the earth's surface." In this sentence, "crash!" would be the onomatopoeia.
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The company also announced a deal that will make its case against its CEO to ensure its employees will have the option for you in order of a product or product or product or
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