Aunit of length in the metric system is the a-kilogram b-kilometer c- liter

Remember that measuring length is a measure of distance. Let's check our answers for any pending measures of distance.

Kilogram.
Kilogram is a measure of mass (or weight). This can normally be used for example for the SI Unit symbol: Kg.

We can get rid of kilogram, since it does not measure distance.

Kilometer.
Kilometer is a measure of distance. This can normally be used for example by it's SI Unit symbol: KM.
Kilometer can be broken down by it's prefix.
Kilo = Thousand

Kilometer means 1,000 meters, which is a unit of distance/length.

Your answer is B.) Kilometer.

I hope this helps!

Size and shape of continents

1) clean up you lab area2) dispose of the chemicals as instructed by your teacher3) put everything back where it belongs unless your teacher tells you otherwise4) dispose of gloves5) wash hands with soap and water