millimeter, _______ , decimeter, meter
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decimeter
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nanometer
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centimeter
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kilometer
C
Correct answer
Explanation
The sequence shows metric units of length in ascending order of magnitude: millimeter (0.001m), centimeter (0.01m), decimeter (0.1m), and meter (1m). The centimeter fits between millimeter and decimeter. Nanometer is much smaller than millimeter. Kilometer is much larger than meter. Decimeter is already listed as the next unit.