Which one of the following will be good conductor of electricity?

Which one of the following will be good conductor of electricity?

مندرجہ ذیل میں سے کون سا بجلی کا اچھا موصل ہوگا؟
Explanation

Molten NaCl conducts electricity.

Because it contains free-moving Na⁺ and Cl⁻ ions.