What is defined as a group of organs working together to perform a specific function?

The concept of a group of organs working together to perform a specific function is most accurately described as a "system." In biological terms, a system is often referred to as an organ system, which is a collection of organs that collaborate to carry out a particular physiological process. For example, the cardiovascular system is made up of the heart, blood vessels, and blood, which work together to circulate nutrients and oxygen throughout the body.

In contrast, terms like "network," "organization," and "unit" do not specifically convey the idea of organs functioning collectively for a common physiological aim. A network usually refers to a more general interconnecting structure, an organization might imply a structured entity in terms of management or societal roles, and a unit often indicates a singular or component part rather than a collective group. Therefore, "system" is the most precise term to describe this biomechanical collaboration of organs.