The best example of a conductor among the provided options is B. An extension cord, which is made of materials like copper that allow electric current to flow. In contrast, rubber gloves and plastic handles are insulators that do not conduct electricity. ;
The best example of a conductor is B. An extension cord, made to allow electric current to flow through it. Rubber utility gloves and plastic tool handles are insulators, protecting against electric shock. Therefore, option B is the correct choice.
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