why is the law of gravity an example of a universal law?\ngravity exists only on the earth and the…

why is the law of gravity an example of a universal law?\ngravity exists only on the earth and the moon.\ngravity exists between any two masses.\ngravity exists between small masses in an open system only.\ngravity exists for masses in a closed system only.
Answer
Brief Explanations:
The law of gravity is universal because it applies to any two masses in the universe, regardless of the system (open or closed) and the size of the masses.
Answer:
Gravity exists between any two masses.