Answer:
True
Explanation:
The Statement that In a system of measurement all units are derived from a base unit is absolutely correct. The units of various physical quantities are derived from seven fundamental units in physics and rest all are the derived units from these fundamental units. The seven Fundamental units are
1. length (m)
2.Time (sec)
3.Mass (kg)
4. Current (ampere)
5.Amount of substance (mole)
6.Temperature ( kelvin)
7.Luminous intensity (Candela)