Answer:
B mass
Step-by-step explanation:
Mass of a body is the resistance it provides when a force is applied to it. A cube of the hundredth part of a meter volume of pure water at the temperature of melting ice has 1 gram mass.
From Newton's second law

Kilogram (kg) is the standard unit of mass.
1 kg = 1000 g
So, 1 gram = 0.001 kg
Gram (g) is the unit of mass.