Final answer:
The feature described is Clip-based resource management. It regulates CPU usage by only activating plugins when they process audio clips. Caveats may exist for plugins with analog modeling due to their continuous processing to emulate hardware.
Step-by-step explanation:
The feature being described here is c) Clip-based resource management. When this feature is enabled in digital audio workstations (DAWs), CPU resources are used more efficiently. Plugins will remain inactive and not consume CPU power until they process audio clips present on the track.
However, there's a consideration to keep in mind for plugins with analog modeling features. These may not behave optimally with clip-based resource management enabled, because their emulation of analog hardware often involves continuous processing to replicate the nuances and character of the original equipment, even when no audio is passing through them.