If an improvement in the quality of education in the united states increases the productivity of labor, it means that

Explanation:

It definitely means that as the quality of education improves, it is directly proportional to the increase in productivity of labour or in other words , it means that as there is an increase in the quality of education, it is directly proportional to the increase of productivity of labour. As quality improves, productivity improves likewise. If quality of education decrease, then there is tendency that the productivity of labour will decrease., so therefore an increase in productivity of labour is a function of an increase in quality of education.