which of the following answers applies to a form of flat money and not a form of representative currency

The answer would be "Paper currency."

Flat money refers to currency that has value because the government declares it to be legal tender, regardless of the actual value of the material it is made from. Paper currency, such as banknotes, is a form of flat money as it is not directly tied to a specific commodity or representative of it.

A form of flat money refers to currency that derives its value from the trust and confidence people have in it, rather than any underlying asset or value. It is not backed by a specific commodity or representative of an asset. Given this definition, the answer would be regular paper currency, such as banknotes or coins that are issued by the government and widely accepted as a medium of exchange.

To determine whether an answer applies to a form of flat money or a form of representative currency, we need to understand the characteristics of each one.

Flat money refers to currency that has value in itself, without being backed by a physical commodity like gold or silver. It holds its value because it is declared legal tender by a government. Some common examples of flat money include banknotes (such as the US dollar), coins, and digital currencies like cryptocurrencies.

Representative currency, on the other hand, is a form of money that represents a claim on a physical commodity, typically a precious metal like gold or silver. In this system, the currency itself does not have intrinsic value but is an intermediary representing the underlying asset. Historically, representative currency has been used when the actual metal was stored in a bank or treasury, and people could redeem their currency for its equivalent value in the metal.

Now, let's examine the given options and identify the one that corresponds to flat money:

1. US dollar banknote: This is an example of flat money since the US dollar is not backed by a physical commodity, but derives its value from being recognized as legal tender and widely accepted in the United States.
2. Gold certificate: This is a form of representative currency as it represents a claim on a specific amount of gold held by a bank or government. It is not flat money because its value is tied to the value of the underlying gold.
3. Bitcoin: Bitcoin is a popular cryptocurrency, and although it does not have physical form like banknotes or coins, it is considered flat money. Its value is not derived from a physical commodity, but rather from the faith and trust placed in the underlying technology and the network of users who accept it as a means of exchange.

Based on the above analysis, the answer that applies to a form of flat money and not a form of representative currency is the option "Bitcoin".