How is disk cleanup generally initiated on a system?

Initiating disk cleanup can indeed occur automatically as part of system maintenance routines in many operating systems. When a system detects that storage is running low or based on scheduled tasks, it may perform disk cleanup automatically to free up space. This automated process can involve the system scanning for temporary files, unnecessary system files, and other clutter that can be safely removed without user intervention.

While users can also initiate disk cleanup through direct user commands or by navigating through system settings like the Control Panel, the focus of this question is specifically on automatic actions taken by the system itself. This understanding provides insight into how operating systems manage disk space proactively, allowing users to benefit from increased performance without actively managing these tasks.

In contrast, the other choices describe processes that are more user-driven or manual. Users have the ability to run cleanup manually through the Control Panel or command prompt, but these actions are initiated at the user's discretion rather than automatically by the system.