Tony weighs 180 pounds on the surface of the Earth. If Tony travels to the Moon, his weight will be about 30 pounds.


Judging from this information, which of the following would be a good general definition of "weight"?
A.
Weight is a measure of the mass of objects.
B.
Weight is a measure of the volume of objects.
C.
Weight is a measure of electromagnetic attraction between objects.
D.
Weight is a measure of the force of gravity on objects.