Question

what does the mass of an object measure?
a amount of space it takes up
b amount of water it displaces
c force of gravity acting on it
d amount of matter it contains

Explanation:

Mass is a fundamental property in physics. It specifically measures the amount of matter an object has. Option A refers to volume (space an object takes up). Option B is related to displacement (often used in volume measurement via water displacement). Option C is weight (force due to gravity acting on mass). Only option D correctly defines mass.

Answer:

D. amount of matter it contains