How is population density defined?

Population density is fundamentally defined as the number of individuals per unit area, typically expressed in terms such as individuals per square kilometer or square mile. This measurement provides insights into how population is distributed across a given land area, allowing for comparisons between different regions or times. High population density might indicate crowded living conditions and greater competition for resources, whereas low density can suggest more space per person but may also point to challenges related to infrastructure and service delivery. Understanding population density is crucial for urban planning, resource management, and assessing socio-economic conditions within a region. The other options do not capture this specific definition concerning area and population figures.