The answer is: [C]: "Product Property".
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Specifically, you would begin by using the "Product Property"; by simplifying the value in parentheses:
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(4⁵ * 4⁻⁷) = 4⁽⁵⁺⁽⁻⁷⁾⁾ = 4⁽⁵⁻⁷⁾ = 4⁻² ;
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