Which phrase describes a polymer? A. a branching structure containing 10 carbon atoms and 22 hydrogen atoms B. a crystal containing many sodium ions and many fluoride ions C. a long chain of carbon atoms with hydrogen atoms attached to them D. a molecule containing six carbon atoms arranged in a ring structure E. a single atom of calcium bonded to two atoms of chlorine

C. A long chain of carbon atoms with hydrogen atoms attached to them

Explanation:

For example, the main component of flour is starch and starch is a polymer.

Now, Starch is a polymeric carbohydrate that consists of a large number of glucose units which are bonded by chemical bonds known as glycosidic bond. It's also known that Starch is a white, tasteless and odorless powder that is not soluble in alcohol or even cold water.

Thus, we can say that polymer is a long chain of carbon atoms with hydrogen atoms attached to them.

Option C is correct.