Answer:
kilogram is a fundamental unit because it is one of the 7 fundamental units that serve as a building block for derived units.
Step-by-step explanation:
Fundamental units are used to measure fundamental quantities. They are fundamental units because they serve as a building block for derived units.
7 fundamental quantities and their corresponding units;
Length – meter
Mass – kilogram
Time - seconds
Temperature - Kelvin
Amount of substance - Moles
Electric Current - Ampere
Luminous intensity - Candela
Thus, kilogram is a fundamental unit because it is one of the 7 fundamental units.