A polymer is any of a class of synthetic substances composed of huge molecules that are made up of repeating sub-units interconnected together by chemical bonds. They constitute such man-made materials as glass, paper, plastics, rubbers, and glass. Anything plastic is a common example of a polymer.
Correct answer would be <span>A) <u>quartz</u></span>. Plastic, nylon, and rubber can all be broken down or heated to make it expand, and be used in common products.
