Answer:
The answer is (D) productivity.
Explanation:
Each country manages to generate products and operate businesses at a different rate from one another. Those who are able to do more – whether in quality and quantity – tend to do better in living standards than countries that do less. Though this might be occurring in a micro-economic level, the productivity generated by its citizens through these efforts would impact the country on a macro-level; from strengthening the country’s currency to reducing the overall unemployment rate.
