In the twentieth century, the bulk of the improvements in labor productivity
A) came from capital deepening: the building up of the infrastructure and the factories of the country.
B) came from improvements in the efficiency of labor.
C) came from labor deepening: the building up of the infrastructure and the factories of the country.
D) came from labor working longer hours.

Question

Quizplus · Accepted Answer

Improvements in labor productivity in the twentieth century were primarily due to enhancements in the efficiency of labor, including better methods, technologies, and processes, rather than simply increasing the amount of capital or labor hours.

In the Twentieth Century, the Bulk of the Improvements in Labor