(i) Why gross domestic product is not a good or suitable measure of the well-being of a nation. Given the aggregate expenditure model of GDP C+I+G+NX, explain three (3) ways that an economy can be expanded by focusing on the specific components of the GDP. (1i) Define "investment". What is the major determinant of investment and explain the relationship between the two? Explain why investment is highly volatile, while consumption is relatively stable