Answer the following question given this paragraph: 

Another sign of a species’ state of health is the density of its populations. Population density is the average number of individuals in a population for a given area. Density is a measure of how crowded or spread out the individuals in a population are on average. For example, a population of 100 deer that live in an area of 10 square kilometers has a population density of 10 deer per square kilometer.


Q: What is the term for the average number of individuals in a population for a given area?

 Choices:

- result density

- population structure

- Area Density

- population density

A:
population density
