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

Increased investment in human capital and capital goods typically leads to greater productivity, efficiency, and overall economic growth, resulting in a rise in the country's GDP.