Plastic is used for covering of wire because plastic isA. a conductorB. an insulatorC. more attractiveD. none of these

Plastic is used for covering of wire because plastic is B. an insulator.

Here's the step by step explanation:

1. Conductors are materials that allow free flow of electrons from one particle to another. Most metals—like copper, aluminum, and iron—are conductors. Wires are usually made of these materials to conduct electricity.

2. On the other hand, insulators are materials that impede the free flow of electrons from one particle to another. Plastic is a good example of an insulator.

3. When electricity is passed through a wire, the conducting material (metal) inside the wire allows the electricity to move freely. However, if a person or an animal touches the bare wire, they could get an electric shock.

4. To prevent this, the wire is coated or covered with an insulating material, like plastic. The plastic prevents the electricity from leaving the wire, making it safe to touch.

5. Therefore, plastic is used for covering of wire because it is an insulator. It has nothing to do with plastic being more attractive (option C), and it's certainly not because plastic is a conductor (option A). So, option D (none of these) is also incorrect.