What are organisms comprised of?

The option stating that organisms are comprised of collections of organ systems is correct because organ systems are essential components that work together to carry out the functions necessary for survival. In complex life forms, such as humans, organ systems (like the circulatory, respiratory, and digestive systems) are composed of various organs that perform specific tasks.

For example, the digestive system includes organs like the stomach and intestines, all of which collectively process food, absorb nutrients, and expel waste. The integration of these systems allows for the functionality and maintenance of homeostasis within the organism. In a broader context, the arrangement of organ systems enables the organism to perform complex behaviors and interactions with its environment, highlighting the importance of these collections in biological life.

Other options may mention individual cells, tissues, or historical figures relevant to genetics, but they do not accurately capture the comprehensive structure of an entire organism as well as the concept of organ systems does. Individual cells form the building blocks of tissues, while tissues group together to form organs, which further combine into organ systems, demonstrating that the complete organization of complex life forms cannot be explained solely by any one of those aspects alone.