Cells can be organized into which of the following units?

Cells represent a fundamental unit of life and can indeed be organized into a range of more complex structures. When considering how cells group together, we see that they form tissues, which are collections of similar cells working together to perform specific functions. These tissues then combine to create organs, which are complex structures responsible for carrying out particular physiological roles in an organism.

Furthermore, organs work together as part of organ systems, contributing to the overall function of the organism. When looking at the broader picture, organisms form populations, which are groups of individuals of the same species inhabiting a specific area. This hierarchical organization—from cells to tissues, from tissues to organs, and from organs to organisms and eventually populations—illustrates the complexity of biological systems, which is why this choice is the most comprehensive and accurate representation of how cells can be organized.

While other options touch on relevant concepts, they do not encompass the entire scope of cell organization up to the level of populations. Understanding this hierarchy is crucial for anyone studying biological sciences or veterinary technology.