Mass is both a property of a physical body and a measure of its resistance to acceleration (a change in its state of motion) when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies. The basic SI unit of mass is the kilogram (kg).
Answer:
Your answer is B. a woolly mammoth fossil that existed 15,000 years ago :)
Explanation:
i just did the test lol