Final answer:
The correct order from simplest to most complex in biological organization is organism, population, community, ecosystem, biosphere. This order reflects the increasing complexity from a living individual to the entire planet's ecosystem where life is found.
Step-by-step explanation:
The correct sequence from the simplest level of biological organization to the most complex is: D) organism, population, community, ecosystem, biosphere.
Biological organization begins with the individual organism, which is the basic unit of life. An organism is a single living thing that can function on its own. Populations consist of multiple organisms of the same species living in the same area. A community includes all the populations of different species that live in a given area and interact with one another. An ecosystem encompasses a community along with all the nonliving, abiotic components of the environment. The biosphere is the broadest level, including all ecosystems on Earth where life exists.
When organizing the levels of life from simplest to most complex, one should start with the individual organism. The next step up is the population, which is a group of the same species in an area. Multiple populations form a community. When you add in the physical environment, you get an ecosystem. Finally, the biosphere is the global ecological system integrating all living beings and their relationships, including their interaction with the elements of the lithosphere, hydrosphere, and atmosphere.