Answer:
B. An un-dissolved ionic compound is considered an electrolyte.
Explanation:
Electrolytes are solutions that allow electrons to pass through, but this does not guarantee that they can travel freely. In electrolytes, electrons travel "attached" to ions. There are strong electrolytes, which practically do not prevent the passage of ions, medium electrolytes that have some resistance to current, weak electrolytes that strongly oppose - but allow - the current to pass, and non-electrolytes, solutions that do not allow the electric current through them.
Electrolytes are formed when the ionic compound dissolves in the molten state or in solution. They are also formed as ionic compounds dissociate into component ions when dissolved in a solution.
It is incorrect to say that an undissolved ionic compound is considered an electrolyte.
