Question

a substance that allows heat, light, sound, or an electric charge to run through it is called
a. an insulator.
b. a reflector.
c. a conductor.

Explanation:

To solve this, we analyze each option:

• An insulator (A) prevents the flow of heat, electricity, etc.
• A reflector (B) reflects light, sound, etc., not allow passage.
• A conductor (C) is defined as a substance that allows heat, light, sound, or electric charge to pass through it.

Answer:

C. a conductor.