Which operating system component schedules when each application runs?

The file manager is responsible for organizing and managing files on a storage device, allowing users to create, delete, edit, and navigate through files and directories. While it plays a vital role in file organization and access, it does not influence the scheduling of application execution or resource allocation in the operating system.

The user interface provides the means for users to interact with the operating system through graphical or command-line interfaces. It allows users to launch applications and access system features but does not handle the scheduling or management of application execution, which is the kernel's responsibility.

Drivers are specialized software components that allow the operating system to communicate with hardware devices. They translate general operating system commands into device-specific instructions. Although crucial for hardware interaction, drivers do not manage application scheduling or resource allocation within the system.