Final answer:
A red blood cell in the human body is both complex and organized, as it is part of a biological system with specialized functions and structured biochemical processes.
Step-by-step explanation:
Among the options provided, a red blood cell in the human body would be considered both complex and organized. Red blood cells are part of a larger biological system and perform specialized functions such as transporting oxygen throughout the body. They have a distinct structure and complex biochemical processes, indicating a high level of organization.
On the other hand, a salt crystal exhibits a high degree of order at the atomic level, but it does not have the complexity associated with biological processes. The Atlantic Ocean is a vast and complex system, but it does not have the level of organization specific to living systems.
As a matter of comparison, complex adaptive systems like a tropical rainforest or a wolf pack exhibit both complexity and organization, as they are composed of interacting parts that can adapt and evolve over time.