Answer;
A.populations,communities, and ecosystems
Explanation;
-Biological organization is the hierarchy of complex biological structures and systems that define life using a reductionistic approach. The traditional hierarchy extends from atoms to biospheres.
-Atoms join together to form molecules that make up cells. In more complex living things, cells join to form tissues, which form organs - structures that perform specific functions in the body. Organs belong to an organ systems which then form individual organisms.
-Biological organization extends beyond the individual to populations, communities, ecosystems, and finally the biosphere.