Which of the following is a result of the law of universal gravitation?
a) all objects have the same mass.
b) some objects have no mass.
c)all objects that have mass attract each other.
d)objects are unable to attract each other.

It's C
A is untrue since obviously all objects do not have the same mass.
B is untrue because all objects must have mass.
D is untrue because "Newton's law of universal gravitation states that any two bodies in the universe attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them".

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