If the force of gravity pulling on an object determines the weight, then what determines the weight of an object?

Answer choices:
- Force of gravity pulling it
 - Inches or fractions of inches.
 - Burning fuel and air
 - a hemisphere is tilted away from the sun
 - a hydraulic system
 - kinetic energy
 - a tree falling
 - principals of aerodynamics

 

 Force of gravity pulling it         