The physical state of a type of matter depends mostly upon how it's are arranged and how they move

The physical state of a type of matter depends mostly upon how its ATOMS AND MOLECULES are arranged and how they move.

In a solid, the atoms and molecules are packed very tightly together and move very little.
In a liquid, the atoms and molecules are a little looser than they are in solids, with atoms and molecules able to flow freely around each other but still kept somewhat together.
In a gas, the atoms and molecules are barely kept together and are able to move around freely.  This is why gases are able to expand throughout a container.

It's have to be 12 or idk

Answer:   [a]:   "slate" .