Which of the following actions did Congress take in the 1930s, in an effort to prevent future financial crises like the stock market crash of 1929?

In an unregulated, competitive market producer surplus exists because some

A) consumers are willing to pay more than the equilibrium price. B) producers are willing to take more than the equilibrium price. C) producers are willing to sell at less than the equilibrium price. D) consumers are willing to purchase, but only at prices below equilibrium price.

A pollution tax

a. is itself a form of negative externality b. is a positive externality used to offset a negative one c. is a price per unit of discharge of pollution d. is a tax on pollution control equipment e. may cause a common pool problem