The correct answer is C. Population density is based on both fertility and historical population levels.
Step-by-step explanation
The graph shows the comparison between Bangladesh and the state of Utah (United States). This graph includes the following data: 2004 population (in millions), total area (in square miles), population density (pop / sq ml), birthrate, and fertility rate. This graph shows that Bangladesh has a higher birth rate, population, population density, and fertility rate than Utah in a smaller area. According to these data, it is necessary to include these data to know the population growth trend through data such as birthrate and fertility rate, because if this indicator is higher, the population will tend to increase as in the case of Bangladesh So the correct answer is C. Population density is based on both fertility and historical population levels.