What is the primary reason of covering electrical wires with plastic?

It makes wires long lasting.

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It makes wires more attractive.

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It makes wires resistant to corrosion.

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It makes wires safe to touch.

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Solution

The correct option is D It makes wires safe to touch.
Plastic covering of wires makes it long lasting, more attractive and resistance to corrosion. But the primary reason covering wires with plastic is to insulate it.
As we know that the materials which do not allow electric current to pass through them are called insulators.
Plastic is an insulator and insulators are used for safety and protection from electrical shocks.
Therefore, outer covering of electric wires is made of plastic mainly to make wires safe to touch.

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