Fact 1: Gravity pulls objects towards planets.

Fact 2: An object's weight is the force of gravity on that object.

Given the two facts above, answer the question "What about an object can cause objects to be pulled towards planets?" with the following options: 
- phase
 - structure
 - Energy.
 - means
 - wind
 - energy
 - weight
 - sunlight


 

       weight  