The value of united states currency is based on
a.)gold stored by the u. s. government
b.)people's acceptance of it for exchange
c.)its expensive production methods
d.)a guarantee from foreign investors

The correct answer is B. People's acceptance of it for exchange. It used to be based on gold but it changed to being what is called a fiat currency. That means that there's no physical commodity that backs its value, but rather its value is backed by supply and demand, by banks and the economy, by people and by the stock market. Many other countries still use gold however to measure the value.