Aluminum Exhibits All Required Properties for Power Cables

Steps:

• Verify electrical conductivity: Aluminum, as a metal, has free electrons that enable efficient electricity conduction, similar to copper.
• Assess density: Aluminum's density is 2.7 g/cm³, relatively low compared to other conductors like copper (8.96 g/cm³), reducing cable weight.
• Confirm ductility: Aluminum can be drawn into thin wires without breaking, a key trait for manufacturing power cables.
• Conclude: Aluminum satisfies all three criteria, making it ideal for the application.

Why A is correct:

• Aluminum is a lightweight metal conductor (per periodic table properties) that conducts via metallic bonding, has low density for weight savings, and ductility allows deformation into wires without fracture.

Why the others are wrong:

• B omits ductility, essential for wire drawing.
• C omits low density, critical for lightweight cables.
• D omits conductivity, the primary function for power transmission.

Final answer: A