The Council of Economic Advisers' Economic Report of the President discusses recent developments in the economy and presents the council's analysis of current policy issues

Which of the following activities creates a negative externality?

A) cleaning up a public garden in your neighborhood B) graduating from college C) keeping an old refrigerator on your front porch D) using a pooper-scooper every time you walk your dog

Efficiency wages paid to workers:

A) equal the lowest pay that workers would accept. B) are wages above the lowest pay that workers would accept. C) equal the marginal revenue product of the workers. D) are wages adjusted for changes in the price level.