Which of the following is true about the mass of an object?
Select one:
a. It decreases if weight increases.
b. It cannot be measured accurately.
c. It is the amount of matter in the object.
d. It is the amount of space occupied by the object.
Definition-the quantity of matter that a body contains, as measured by its acceleration under a given force or by the force exerted on it by a gravitational field  (in general use) weight.
