How does the motion of particles in the sun's plasma compare to the motion of particles in a solid?

particles in both the plasma and a solid move around to fill available space.

Particles in the plasma move randomly, but particles in a solid vibrate in one place.

Particles in the plasma have low kinetic energy, but particles in a solid have high kinetic energy.

Particles in both the plasma and a solid are made up of fast-moving electrons and cations.

First of all, Motion of plasma particles is most similar to gas particles albeit plasma is at very, very, very high temperature which is why it have very high velocity.

Like Sun, Stars to contain plasma very high pressure is required which is provided by its exceptionally high gravitational force.

This is why every Star's Core (even sun) is composed of solid Iron even though it is the hottest zone of the Star. The reason is same that is high pressure makes even plasma to solidify and become solid (except very high temperature this solid have no other common characteristics with Plasma)

the answer is Particles in the plasma move randomly, but particles in a solid vibrate in one place (B)