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Which units are part of the metric system?

  1. Inches, Feet, Miles, Yards

  2. Milometers, Centimeters, Meters, Kilometers

  3. Pounds, Ounces, Gallons, Quarts

  4. Bytes, Bits, Kilobytes, Megabytes

The correct answer is: Milometers, Centimeters, Meters, Kilometers

The metric system is a decimal-based system of measurement used worldwide for scientific and everyday purposes. The units that are part of the metric system include measurements for length, mass, and volume. Among the options provided, units such as millimeters, centimeters, meters, and kilometers are all standardized units in the metric system used to measure length. Millimeters are 1/1000th of a meter, centimeters are 1/100th of a meter, meters serve as the base unit for length, and kilometers are equal to 1,000 meters. This system is consistent and promotes ease of conversion between different scales of measurement due to its base-10 structure. Other options include units that belong to different measurement systems. The first option consists of standard imperial units commonly used in the United States and the UK, while the third option comprises customary units of weight and volume. The last choice features units of digital information, which, although they are standardized, do not belong to the metric measurement framework. Hence, the choice of millimeters, centimeters, meters, and kilometers accurately reflects units that are part of the metric system.