Which property of matter changes depending on the gravitational pull

The question is somewhat misleading.

Any lump of matter has a certain amount of mass.  The mass is a property of that lump, and it doesn't change, no matter what happens to the lump or where it goes.

But the WEIGHT of the lump depends on what else is around, because the weight is the strength of the gravitational force on it, caused by some OTHER mass.  The weight can change, because it depends on the OTHER mass.

The gravitational force changes the WEIGHT of the lump of matter, but that's not really a property of the matter.

would be false hope this out

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.