8. This question surrounds long-run growth. a) {4 marks] \"Why is real GDP per capita the preferred metric oflong-run growth and not simply nominal GDP? in) {-1 marks) Human capital is the term used to describe the level of health and education of workers in an economy. Given the assumptions of our standard growth model, why might investments in human capital go further in e. sub-Saharan African country than in a Western European country? c] [4 marks) \"(here do the mds to invest in new physical capital come from in an economy? TWhat is the opportunity cost of investing in new physical capital stock? cl) {-1 marks) Your friend suggests that the stande of living in Canada would increase if we simply doubled our labour force and doubled our capital stock. According to the Neoclassical model of growth, why is he wrong?I e] (4 marks) Technological change has been identied as a key determinant of improved living standards. What policies could a government use to encourage technological change