PLEASE ANSWE

Gravity is a non-contact force since the two objects don't have to be touching to feel the force of gravity. How can you increase the force of gravity? Select ALL that apply.

A. increase the mass of one of the objects
B. increase the distance between the objects
C. decrease the mass of both of the objects
D. decrease the distance between the objects.

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

The correct answer should be "electrons orbit the nucleus in circular motions exactly as shown on the classic bohr model."