Analogy – property mapping: “Metal” is related to “conduction” in the same way that “plastic” is related to which of the following?

Introduction / Context:
This analogy probes understanding of characteristic physical properties. Metals are known for conducting heat and electricity; plastics are known for the opposite electrical behavior in typical use. We must select the property that mirrors the relationship.

Given Data / Assumptions:

• Metal → good electrical/thermal conduction.
• Plastic → generally non-conductive (electrical insulator) in everyday applications.
• The required mapping is property-to-material.

Concept / Approach:
To preserve symmetry, we should pair plastic with “insulation,” the commonplace property opposite to conduction. Other options are vague (industry), off-target (ground oil chemistry), or incorrect emphasis (inflammability varies across plastics and is not the defining everyday property).

Step-by-Step Solution:

Verification / Alternative check:

Why Other Options Are Wrong:

• Ground oil chemistry: Irrelevant phrase; plastics are petrochemical derivatives but that is not a property.
• Industry: A domain, not a property.
• Inflammability: Not a universal, defining property of plastics.
• Reactivity: Too general; many plastics are chemically resistant rather than notably reactive.

Common Pitfalls:
Choosing a context or origin instead of a material property. Keep the analogy within the “material ↔ physical property” frame.

Final Answer:
Insulation