The reason gravity works is because masses bend time and space. The effect of gravity on plants might be reduced if certain minerals are added to the soil. The force of gravity between two objects depends upon their masses and the distance between them. The experiments being done on gravity today are better than what were done in the past and a full understanding is only a few years away.
I gave my students this multiple choice question: Which statement about gravity is written as a law?

Only one answer is correct among these 4 choices:
- The reason gravity works is because masses bend time and space.
- The effect of gravity on plants might be reduced if certain minerals are added to the soil.
- The force of gravity between two objects depends upon their masses and the distance between them.
- The experiments being done on gravity today are better than what were done in the past and a full understanding is only a few years away.

Could you tell me which one is correct?

The force of gravity between two objects depends upon their masses and the distance between them.