Hey there!
Here is your answer:
<u><em>The proper answer to this question is option C "are poor conductors of electricity".</em></u>
Reason:
<u><em>Plastic is a low conductor of electricity so its less likely to cause a fire.</em></u>
<em>Therefore the answer is option C.</em>
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit
E. Glaciers only scratch rocks that are located near the equator
The best answer should be B.
Apparatus in laboratories can be really dangerous, especially the ones which involves electricity.
As a student, he should not just wrap the cord with electric tape, as he might wrap them in a wrong way and possible could hurt himself. So A is not a good answer.
And for C, even though it is a great idea not to use the frayed cord hot plate, but he should also notify the teacher as that hot plate with frayed cord may be passed on and be used for the other students which may pose a risk to them.
And obviously, using the hot plate with frayed cord is super dangerous and he could possibly get electric shock. So D is the incorrect answer.
And it's only left to B, it right to notify the teacher so the teacher can actually either fix it themselves or they wouldn't pass on to other students to use it.
The feldspar would scratch the flourite.