Answer:
an increase; an increase.
b. Offering free public education to every worker in the country. c. Encouraging saving by allowing workers to set aside a portion of their earnings in tax-free retirement accounts.
Step-by-step explanation:
Based on the available information, the physical capital per worker and the labor productivity in 2028 are higher than those in 2027 due to an increase in productivity. Furthermore, if there could be free education, savings, and funding for research work, productivity will definitely increase. This will enlighten the workers and boost the economy.