As matter changes state from solid to liquid, what statement can we make about the attractive force between its molecules?
a) it decreases.
b) it increases.
c) it remains constant.
d) it varies depending on location.

The correct option is A.

Explanation:

In solid state, the atoms are tightly packed due to the strong force of attraction between its molecules.

In liquid state, the atoms are not tightly packed due to the less force of attraction between its molecules as compared in solid state.

In the given problem, matter changes state from solid to liquid then the force of attraction between its molecules decreases.

Therefore, the correct option is A.

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

it is very well related to a lot of things but with my limited knowledge i can confidently say that the answer is space.