A system that will maintain its fundamentals while undergoing and responding to disturbances is a(n) system.

A system that maintains its fundamentals while undergoing and responding to disturbances is known as a "stable system."

Stable systems have the ability to return to their equilibrium state after being disturbed. This concept is commonly applied in various fields, particularly in control theory, where stability is a key requirement for the performance of dynamic systems. In engineering, for example, a stable control system ensures that any deviations from desired performance due to external disturbances do not cause uncontrolled behavior or oscillations.

In summary, stability is essential for the reliable operation of systems, whether they are mechanical, electrical, or biological, as it allows them to cope with changes and disruptions effectively.