an experiment discovered that a particular material was a poor conductor of electricityA. conductor

B. insulator
C. switch
D. resistor

the answer is B) insulator

The correct answer is B. insulator.

To determine whether a material is a good conductor or a poor conductor of electricity, you can conduct an experiment called the conductivity test. Here's how it can be done:

1. Gather the necessary materials: a power source such as a battery, wires, a lightbulb or a voltmeter, and the material you want to test.

2. Set up the circuit: Connect one end of a wire to the positive terminal of the power source, and connect the other end of the wire to one end of the material you want to test. Connect another wire to the other end of the material, and connect the other end of this wire to the negative terminal of the power source. If you are using a voltmeter, connect the voltmeter between the two ends of the material.

3. Observe the result: If the lightbulb lights up or the voltmeter reads a high voltage, it indicates that the material is a good conductor of electricity. On the other hand, if the lightbulb does not light up or the voltmeter reads a very low voltage, it suggests that the material is a poor conductor, also known as an insulator.

In the given experiment, the conclusion drawn from the results was that the material being tested was a poor conductor of electricity. Therefore, option B, insulator, is the correct answer.