How to tell if M1 Mac has Rosetta installed?

I am trying to run only native software. So I would like to be able to monitor whether Rosetta 2 is available or not. I am not asking if Rosetta 2 is *running*. I am **asking if Rosetta 2 is *present***, is capable of running. I know I can sort on the *Kind* column of the process list seen in the *Activity Monitor* app to find a process currently running through Rosetta 2 or running natively (“Apple”). But I want to know if the Rosetta capability in general has been installed/activated in general on my Mac, even if no app is currently running that way.