Correct option is D
The correct option is: (d) amount of matter it has
Mass is the measure of the amount of matter in a body.
It is an inherent property of an object and does not change with location or gravity.
SI Unit: Kilogram (kg).
Different from weight: Weight = mass × gravity.
Scalar quantity: No direction associated.
Gravitational force is weight, not mass.
Space occupied refers to volume.
Water displacement relates to volume, not mass.