Answer:
if u meant to put a link or image i cant see it it just shows a loading screen for me
Explanation:
Answer: Base units
The principal SI units that are used to derive all other SI units are called base units. The base units are the units of fundamental quantities e.g. M L T that is Mass, Length, and Time. All other physical quantities can be written in the fundamental dimension forms. The physical quantities are not measured directly but are build up from the building blocks that are the fundamental quantities which have base units.
Start with what the paragraph is about and put it basically in your own words