Why is the metric system preferred by science?
it provides a common measuring system for the world.
it is more fun to use.
it is based on 10.
it has more counting units.

For the answer to the question above, the metric system is the preferred system of scientific units for several reasons: The majority of countries in the world employ the metric system of measurement. The prefixes attached to metric units carry the same meaning for all base units.
So my answer is the first one It provides a common measuring system for the world.