Answer:
your answer is either C or D. it is most likely D
Explanation:
the reason why its not A or B is because it does not let electricity to pass threw if you look at a charger or a cord that has to be plugged into a wall you will notice that the outside has a type of rubber or plastic over the mental wires in the inside of the cord that's why A and B aren't the answer. The reason Why I'm not so sure about C is because it is and isn't a insulator so that's why I think that D is most likely the answer
