Final answer:
Polyethylene cable has a fungus resistant covering. The high-voltage wires connected to metal towers are not wrapped in insulating material, instead, they are held aloft by insulating connectors, with air acting as the insulator.
Step-by-step explanation:
The cable that is known for having an overall covering that is fungus resistant is polyethylene. Cables such as PVC (Polyvinyl Chloride) are common for a variety of applications but are not specifically known for fungus resistance. Plenum cables are designed to meet fire-code and smoke-inhibition standards for use in plenum spaces of buildings, and armored cables protect against physical damage rather than fungus. Therefore, the correct answer is d) Polyethylene.
As for the statement regarding high-voltage wires, it is false. High-voltage power lines, indeed, are supported by insulating connectors; however, these wires themselves are not typically wrapped in an insulating material because the air acts as an insulator and the distance between the wires prevents arcing under normal conditions.