Final answer:
The correct answer to calculate the real GDP per capita growth rate is to subtract the percentage changes in both prices (inflation) and population from the nominal GDP growth rate. Thus, the correct option is c. both prices and population from the nominal GDP growth rate.
Step-by-step explanation:
To calculate the real GDP per capita growth rate, we need to account for changes in both the price level (inflation) and population growth. By subtracting the inflation rate, which is represented by percentage changes in prices, from the nominal GDP growth rate, we adjust for price changes.
To further understand real GDP per capita, we also must account for population changes. If the population grows faster than GDP, it can result in a decrease in GDP per capita, even if the GDP itself increases. Conversely, if GDP falls but the population decreases faster, GDP per capita can still increase.
Based on this understanding, the correct answer to the multiple-choice question is c. both prices and population from the nominal GDP growth rate. This is because we're interested in the per capita aspect, which by definition takes into account population changes.