Country x has a command economy that relies on the extraction and sale of valuable minerals and other natural resources that are in high demand globally. the economy has been declining, and the government wants to reverse this trend. how can country x do so?

a
by investing in new mining technology and equipment to improve the efficiency of the mining sector

b
by increasing barriers to international trade to protect the domestic mining industry from competition

c
by reducing government spending on education and training programs meant to increase human capital

d
by increasing taxes on corporations and individuals to increase government control of the economy