56. Electrical wires carry electricity from power stations to buildings, and then to all the rooms within a building. Wires are often made from copper or other metals surrounded by a layer of plastic. Which of the following provides the best explanation for this choice of materials? O Metal conducts electricity effectively and plastic is a good insulator. 4 O Plastic completes a circuit so electricity can flow through the metal. O Plastic conducts heat effectively and metal is a good insulator. O Electricity attracts metal and repels plastic.​