Final answer:
True, the high-voltage wires on metal-frame towers are held aloft by insulating connectors and wrapped in an insulating material to avoid electrical issues.
Step-by-step explanation:
True, the high-voltage wires that you see connected to tall metal-frame towers are indeed held aloft by insulating connectors, and these wires are wrapped in an insulating material. This is necessary to prevent the wires from coming into direct contact with the tower or other objects, which could cause a short circuit or other electrical issues.