What command should you use to resume a job that was stopped and run it in the background?

To resume a job that has been stopped and run it in the background, the most appropriate command is bg. This command is specifically designed for continuing a paused job by placing it in the background, allowing it to run without occupying the terminal session.

When a job is stopped, typically by pressing Ctrl+Z, the job is suspended and can be resumed with bg or fg. Using bg allows you to continue the job while freeing up the terminal for further commands, which is the desired outcome in this scenario.

In contrast, the fg command, while it does resume a stopped job, it brings the job back to the foreground, which is not what is required in this case. The jobs command simply lists the jobs that are currently in the background or stopped, and the resume command is not a standard command in the shell, making it an invalid option for this purpose.