Hey!
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[tex]\Large\boxed{\mathsf{C)~meters}}[/tex]
SI units, other known as the international system of units is used for finding the length or magnitude of an object. The only unit that is reasonable to measure a rope is a meter because it is longer then the other units and depending on how long the rope is, it's faster to calculate the length of the rope.
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Hope This Helped! Good Luck!
