Which word refers to any system that uses an exchange medium—whether it's a precious metal or government-printed paper—that can be traded for other goods?
Money because price is how much of the exchange medium you need, barter is trading something for something else without a exchange medium, value is how much something is worth
The word that refers to any system that uses an exchange medium - whether it is a precious metal or government-printed paper and that can be traded for other good is money. The answer to your question is choice or letter B.
