In economics, we should know about the standard of living, the knowledge about Solow growth model and endogenous growth model of a country. Why it is so importance to know all of these?

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Our simple growth model implies that Select one: a.countries with higher K/L ratios will have higher economic growth. b.increases in K/L increase Y/L but at a diminishing rate. c.capital has no impact on Y/L. d.there is little prospect of poor countries catching up with rich countries.   In the past few years, several high profile celebrities have campaigned for debt relief for HIPC's (Highly Indebted Poor Countries). While debt relief can potentially play a useful role in poverty reduction there are also some possible downsides such as Select one: a.reducing a poor nations exports. b.increasing government deficits. c.encouraging further debt by setting up an expectation that future debts will also be forgiven. d.under cutting local markets for food and other commodities given as aid.