Answer:
The correct answer is (c)
Step-by-step explanation:
Gross domestic product is a macroeconomic variable which helps to understand the overall economic performance of a country. In 1870 the real GDP person which is also known as GDP per capita of the US was 13 times higher in 2008 than it was in 1870. Similarly, the real GDP per capita of Japan was 31 times higher in 2008 than it was in 1870.