The best command to use to list all current containers, regardless of their running state, is A) docker ps -a. This command will show all containers, both running and stopped, with details such as container ID, image name, status, and ports. The other commands are either invalid or not relevant for this task. For example:
B) docker list is not a valid command. There is no subcommand named list in docker.
C) docker image ls will list all the images available on the local system, not the containers.
D) docker inspect image will show detailed information about a specific image, not all the containers.