Which of the following factors contribute to economic growth? a) an increase in the standard of living b) a decrease in the productivity of labor c) an increase in the average wage rate paid to workers d) an increase in the proportion of the population that is college educated

Which of the following factors contribute to economic growth?
a) an increase in the standard of living
b) a decrease in the productivity of labor
c) an increase in the average wage rate paid to workers
d) an increase in the proportion of the population that is college educated

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