Answser: plasma.
Explanation:
1) The four states of matter are solid, liquid, gas, and plasma.
2) Plasma is a state that only occurs at very high temperatures and consists of ions: charged species formed by atoms that gain or lose electrons.
Only extreme conditions of high energy are compatible with the existence of plasma, as those conditions of the stars and around the lightnings produced during electric storms.
3) The order of the kinetic energy of the particles in each state of matter is: solid <liquid <gas <plasma.
Therefore, the particles in solid state vibrate mainly and do not move; the particles in liquid state slide and pass one another (flow); the particles in gaseous state are free to move at higher speeds and do not interact with each other (except for collisions); and the particles in the plasma have the highest velocity and are in the form of ions.
