What is the goal of using a population density map?

1. To describe how people move from one place to another
2. To show the spatial distribution of people visually
3. To summarize how many people have lived in a place over time
4. To provide specific numbers of people who live in a place

2. To show the spatial distribution of people visually

The goal of using a population density map is to show the spatial distribution of people visually. This means that option 2, "To show the spatial distribution of people visually," is the correct answer.