Final answer:
The statement about high-voltage wires being wrapped in insulating material is false as they are actually bare, and the statement that a falling bar magnet induces an electric current in a copper tube is true due to electromagnetic induction.
Step-by-step explanation:
The statement 'The high-voltage wires that you see connected to tall metal-frame towers are held aloft by insulating connectors, and these wires are wrapped in an insulating material' is false. High-voltage wires are indeed held aloft by insulating connectors to prevent the current from grounding. However, the wires themselves are not wrapped in an insulating material; they are actually bare wires. The air around them serves as an insulator due to the high elevation of the wires above the ground.
Regarding the second statement, 'If you drop a bar magnet through a copper tube, it induces an electric current in the tube', the correct answer is true. This is an example of electromagnetic induction. The falling magnet produces a changing magnetic field, which according to Faraday's law induces an electromotive force in the copper tube, and consequently an electric current if the circuit is closed.