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Which of the following best describes a direct proof of the statement "If n is o...

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Which of the following best describes a direct proof of the statement "If n is odd, then n² is odd"?

Assume n is not odd and show n² is not odd

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Assume n is odd, so n = 2k + 1 for some integer k, then show n² = 2(2k² + 2k) + 1 is odd

100%

Show examples where n is odd and n² is odd

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Assume n is even and n² is odd, then derive a contradiction

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Assume n² is even and show n must be even

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