[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
As we know ~
Gravitational Force acting on two objects can be easily represented by formula :
[tex]\qquad \sf \dashrightarrow \:F = \dfrac{Gm_1m_2}{r²}[/tex]
so, from above we get :
[tex]\qquad \sf \dashrightarrow \:F \propto \dfrac{1}{r²}[/tex]
We can conclude from derived information that, Gravitational force is inversely proportional to the distance between the objects. so if the objects move closer to each other. value of r decreases. hence we can say that Gravitational force increases.
Therefore, the correct choice is A. It increases
