Due to a boom in the US, the average rate of return on investments is likely to rise causing the US dollar to

Which of the following is not an upper-middle income country?

a. Brazil b. South Africa c. Pakistan d. Argentina

When the free market produces less than the socially optimal quantity of a good,

a. negative externalities must be present b. marginal social cost must exceed marginal private cost c. marginal private benefit must exceed marginal social benefit d. the government should tax production of the good e. there has been a market failure