Final answer:
The term that describes the range of area inhabited by a population is 'Distribution.' This term is important in ecology to understand how individuals within a population are spread across their habitat and interact with other species in an ecosystem.
Therefore, option D is correct.
Step-by-step explanation:
The term that describes the range of area that is inhabited by a population is Distribution. Distribution reflects how individuals within a population are spread out across their habitat. This can range from evenly spaced individuals to clumped groupings, depending on the species and its environment. Population distribution is crucial to understanding population structure as it influences the interactions and dynamics within and among species in an ecosystem.
It's important to note that while habitat refers to the physical place where a species lives, an ecosystem includes all biotic and abiotic elements in an area and their interactions, and a niche encompasses a species' role within its ecosystem, including its use of resources and relationships with other organisms. These terms are fundamental in ecology and the study of how species are spread across geographical areas, which is known as biogeography.