please help me with this chemistry solutions problem

Question

Which of the following solutions will be the best conductor of electrical current?

A. ethylene glycol, C₂H₆O₂(aq)

B. potassium chloride, KCl(aq)     

C. methyl alcohol, CH₃OH(aq)

D. bromine, Br₂(aq)

E. glucose, C₆H₁₂O₆(aq)

Answer 1

B. potassium chloride, KCl(aq)     

It is the only one of the choices that will produce ions upon dissolving in water, thus it will conduct a current.