How can you view all running Docker containers?

To view all running Docker containers, the command utilized is "docker ps." This command specifically lists all containers that are currently active and running. By default, it does not display stopped containers unless additional options are specified. The output from this command typically includes crucial information such as container IDs, names, statuses, and the ports mapped for each running container.

In Docker, the other choices do not serve this purpose. For instance, "docker list" is not a recognized command in Docker’s command reference, while "docker show" does not correspond to any function for listing containers. "docker containers" may sound relevant, but it lacks the correct syntax or specific functionality of the "docker ps" command, which is the established command used for this task.