Which of the following units for distance is an Sl unit?

1) Centimeter

2) Foot

3) Inch

4) yard

Option a, centimeter

Explanation:

Foot, Inch and Yard are units used in America, UK, and other english-speaking countries.

These countries are currently reviewing the possibility of adapting the measures to the SI. The centimeter is a unit derived from the meter, base unit for measuring length in the SI, and corresponds to the cgs system, where in addition to the centimeter, is constituted by gram and second units