No link or Files plz i need help with this one i been stuck on it for a long time

The particles in a solid are tightly packed and locked in place. Although we cannot see it or feel it, the particles are moving or vibrating in place. 

C

Explanation:

Weak acid and base ionization reactions and the related equilibrium constants, Ka, and Kb. Relating Ka and Kb to pH, and calculating percent dissociation. ... bases refer to species that completely dissociate to form ions in solution. ... Problem 1: Weak vs. strong acids at the same concentration ... Acid-base properties of salts.

So your answer is C.

Hope this helps! <3