Which of the following commands lists running processes in Linux?

The 'top' command in Linux is used to display a dynamic, real-time list of running processes, providing information such as CPU usage, memory usage, and process IDs, which is essential for monitoring system performance and identifying resource-intensive applications.

'apt-get' is a command-line tool for handling packages in Debian-based Linux distributions, used for installing, updating, and removing software.

'ls' is used to list directory contents, not running processes.

'cat' is used to concatenate and display file contents, not to list running processes.