What would be the most accurate way to describe resistance?

It is an object's ability to accept the flow of current and is measured in ohms.
It is an object's ability to accept the flow of electrons and is measured in volts.
It is an object's ability to reflect the neutral particles and is measured in volts.
It is an object's ability to reflect the positive particles and is measured in ohms.

Explanation:

hit is the abilty to accept the flow of current and is measured in ohoms

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.