The country of Saudi Arabia has invested heavily in improving its human capital and its capital goods. Which is a likely result of this increased investment?

A. Trade decreases
B. Standard of living goes down
C. Gross Domestic Product (GDP) rises
D. Gross Domestic Product (GDP) falls

C. Gross Domestic Product (GDP) rises

Investing in human capital and capital goods typically leads to an increase in productivity and efficiency, which in turn can lead to economic growth. This can result in an increase in the country's GDP.