Answer:
Options a, b and c ate the correct answers.
Explanation:
The metric system is the most common system of weights and measures. This system is an internationally recognized system for measurement. So, in metric system, different measurements for distance are namely kilometer, meter, decimeter, centimeter and millimeter. Out of these we have 3 in given options.
A - Meter
B - Millimeter
C - Centimeter
Hence, these three are the correct answers.
Foot is not included in metric system.