In the World data, what are common indicators used to compare countries?

• A. The Weather in the UK, Population of the UK, and World data
• B. Population data only
• C. GDP per capita, life expectancy, birth rate, death rate, literacy, and access to clean water
• D. GDP per capita and population size only.

Answer: (D)

When comparing countries in World data, you typically look at two basic figures that summarize size and wealth. GDP per capita shows the average economic output per person, giving a sense of living standards, while population size reflects how big the country is and the scale of its market. These two indicators are widely available and provide a straightforward way to rank and compare nations quickly.

The other options introduce data that either aren’t universal across all countries in the dataset (like weather data for a specific country) or focus on more detailed development measures that aren’t the baseline for simple cross-country comparisons (and some options cover only one dimension). That’s why the two-indicator approach is the most common baseline in this World data context.