Answer the following questions :
Out of three materials polythene, polyvinyl chloride and polystyrene, which material is best suited to cover electric wires and why?

Explanation

To determine which material is best suited to cover electric wires among polythene, polyvinyl chloride (PVC), and polystyrene, we can analyze the properties of each material.

### Step-by-Step Solution:

1. **Identify the materials**: The three materials in question are polythene, polyvinyl chloride (PVC), and polystyrene.

2. **Understand the purpose of covering electric wires**: The primary purpose of covering electric wires is to provide insulation. This prevents electric shocks and protects the wires from environmental factors.

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