The natural rate of unemployment never changes

Under which of the following sets of circumstances is it definitely the case that the average product increases as more labor is hired?

A) Total product increases as more labor is hired. B) The marginal product is equal to the average product. C) The marginal product is positive. D) The marginal product is greater than the average product. E) The marginal product is less than the average product.

The world trading system combines negotiated agreements that promote trade liberalization called ________ with binding agreements called ________ that block tariff increases

A) fiscal policies; monetary policies B) truces; aggressions C) free trade; enforcement contracts D) levers; ratchets E) wheels; walls