Fact 1: The mass of an object causes the gravitational force exerted by that object.

Fact 2: If an object has weight it necessarily has mass.

Given the two facts above, answer the question "What aspect of an bject causes the gravitational force exerted by that object?" with the following options: 
- atmosphere
 - kinetic
 - motion
 - two
 - barrel
 - shape
 - TRH
 - weight


 

        weight 