Asatellite is traveling in a orbit around the earth. what change would cause it to experience more gravitational force from the earth? a. orbiting closer to the earths surface. b. removing some of its mass. c making it orbit faster. d. making it's surface reflect the sun's rays.

The correct answer is:
A. orbiting closer to the earths surface. 

In fact, the gravitational force exerted by the Earth on the satellite is

where
G is the gravitational constant
M is the Earth mass
m is the satellite mass
r is the distance of the satellite from the Earth's surface

We can see that, if the satellite orbits closer to the Earth's surface, its distance r from the centre of the planet decreases. But when r decreases, F (the gravitational force) increases, so A is the correct answer.