An insulator a. allows the easy movement of heat b. does not allow the movment of heat c. is usually a non metal d. both b and c.

D.Both B and C
As they not allow heat to pass through and usually non metal

The answer is D - Both B and C

An insulator has a extremely high resistance, not allowing the flow of electricity to move through it

Examples of insulators are: glass, cardboard, rubber, paper, etc...

Conductors on the other hand allows the flow of energy

Conductors are usually metal objects that electricity can easily flow through

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