Question

the metric system is based on powers of... 8. 2. 10. 5.

Explanation:

The metric system (or SI system) is designed such that units are related by powers of 10. For example, 1 meter = 10 decimeters = 100 centimeters, and 1 kilogram = 1000 grams. This base - 10 relationship makes conversions between units straightforward (e.g., to convert from meters to centimeters, you multiply by 100 which is $10^{2}$). The other options (8, 2, 5) do not form the basis of the metric system's unit relationships.

Answer:

C. 10. (assuming the options are labeled A:8, B:2, C:10, D:5)