What is the true statement regarding the processes visible to users?

The statement that processes a user sees are not the only ones the computer is running is true because modern operating systems manage multiple processes that can operate behind the scenes, often without direct user interaction or visibility. Even if a user only sees certain processes listed in a task manager or other monitoring tools, there are numerous system and background processes that perform essential functions vital for the operation of the OS and applications. These can include system services, daemons, and processes associated with different system functions that maintain various aspects of the operating system, such as memory management, device control, and security tasks.

This concept is fundamental to understanding how operating systems work, as it highlights the difference between user-facing processes and the broader context of system operations. Users typically interact with a limited subset of all running processes, while many other processes are handled internally by the system to ensure stability, security, and efficiency.