Answer:
Inversely
Explanation:
The correct answer that fills up the blank correctly is "Inversely"
According to the Newton's theory of gravity,
the force between the two massive objects is given as:
[tex]F=\frac{GM_1M_2}{R^2}[/tex]
where,
G is the gravitational force constant
M is the respective mass of the two masses
R is the distance between the masses.