Which equation best expresses the relationship between pressure and volume for gas?

It won't be possible for me to answer this question if there is no context. I tried to find a similar question and I came up with one. The problem is shown in the attached picture. From the given choices, all their units are atm*mL. So, that means that P*V. The answer could only be (2) or (4). Let's try the data in the table to find out.

PV = (0.5 atm)(1000 mL) = 500 atm*mL
PV = (1 atm)(500 mL) = 500 atm*mL
PV = (2 atm)(250 mL) = 500 atm*mL

Thus, the answer is choice (2).

Ithinks its false. tell me if im wrong

Both models are effective because they show the valence electrons, and these valence electrons indicate the reactivity of an element.