Final answer:
The high-voltage wires connected to tall metal-frame towers are held aloft by insulating connectors, but they are not wrapped in an insulating material. The insulating connectors prevent the wires from making contact with the metal towers.
Step-by-step explanation:
The statement is false. The high-voltage wires that you see connected to tall metal-frame towers are indeed held aloft by insulating connectors, but these wires are not wrapped in an insulating material. In fact, they are bare conductors made of materials such as aluminum or copper. The purpose of the insulating connectors is to keep the wires from making contact with the metal towers and causing a short circuit.