Answer:
The standard unit used to measure of mass is gram.
(2) is correct option.
Step-by-step explanation:
S.I is the standard international system of unit.
The S.I unit of mass is kilogram.
1 kg = 1000 gm
So, We can say that,
The standard unit used to measure mass is gram.
Cubic meter is the unit of volume.
Liter is the unit of water.
Meter is the unit of length.
Hence, The standard unit used to measure of mass is gram.