Opportunity cost exists because of

Official unemployment rates may underestimate the true rate of unemployment because the official rate

A) fails to include discouraged workers. B) does not include individuals receiving any type of unemployment compensation. C) may include some individuals who are not actually in the labor force. D) includes those workers who only work part time.

Under the side agreements to the NAFTA,

A) low environmental standards should not be used to attract trade or investment. B) the U.S. sets environmental standards. C) the U.S. enforces environmental standards in the rest of the free trade area. D) environmental standards are not specifically discussed.