To What Do Economists Attribute the Rapid Growth of Labor

Multiple Choice

To what do economists attribute the rapid growth of labor productivity in the United States relative to other countries?

A) the flexibility of U.S.labor markets and the efficiency of the U.S.financial system
B) the strict government rules in the United States that regulate a firm's ability to hire and fire workers
C) the low rate of job mobility in the United States
D) the high level of unemployment benefits the United States pays relative to other countries like Canada