How are living things organized from the simplest to the most complex?

The correct response outlines the hierarchical organization of living things, progressing from simpler structures to more complex levels. The sequence begins with cells, which are the basic units of life. Cells group together to form tissues, which consist of similar cells working together to perform specific functions. As tissues coalesce, they create organs, each of which is made up of different types of tissues working collaboratively to carry out distinct physiological tasks.

Next in the hierarchy are organ systems, which consist of groups of organs that work in concert to execute more complex functions necessary for maintaining life. Finally, at the highest level, organisms represent individual living entities that encompass all the previous levels of organization. This model illustrates the complexity and collaborative nature of biological systems, demonstrating how each level builds upon the last.

The other options present different sequences or components that either misplace specific levels of biological organization or introduce unrelated categories, such as ecosystems, which are broader than the individual organism level. This makes them less accurate in capturing the fundamental hierarchy from the cellular level up to the organism.