Amassive and a less massive object free-fall at the same rate because
a. the ratio of the net force to mass is the same for each
b. the gravity is the same
c. they weigh the same amount
d. they experience the same force of gravity
e. none

B. The gravity is the same

Explanation:

The gravitational field around a massive body is independent of the size and shape of another body placed in it.Any body placed inside a gravitational field experience the same acceleration due to gravity towards the center.This was proven by Galileo through his famous leaning tower experiment.So, any body placed at the same location inside the field of the massive body such as the Earth experiences the same acceleration towards the earth regardless of its size shape and mass neglecting the air resistance.

Not what goes around on earth but the universe too.