Do US dollar is a currency made of low cost materials it is valuable/ need help ?!?!

The answer is "Option C".

Explanation:

It is government-issued money that isn't back by a product includes gold or silver. It provides central banks more influence over the government as they can regulate how so much money is created. The majority of modern paper currencies, such as the U.S. dollar, is fiat currency. It is a medium of exchange that had to define as money, usually by government regulation. It proposes as a replacement for paper currency and representational currency.

there are two main types of historical sources: primary sources and secondary sources. a primary source is something that originates from the past. it can be a chronicle, a piece of pottery, or even a piece of glacial ice that gives us climate data about the levels of atmospheric carbon one thousand years ago.

d. china

good luck

d is the best choice