In the context of audio production, clearing audio from the Clip List is a method for deleting a track within a project. Closing a session does not delete tracks, and deleting files from the hard drive operates on saved files rather than the project's tracks.
In audio production and editing, particularly when using digital audio workstations (DAWs), deleting a track typically means removing that track from the session or project you are working on. Among the options presented, clearing audio from the Clip List is a method that can be used to delete a track. This action removes the selected audio clips from the list of available media within your project but does not delete the files from the hard drive. If you want to delete the track entirely, including the audio files, you would use a different method that includes deleting audio from your hard drive. However, actions such as closing a session do not delete tracks; it merely closes the current project you're working on without making any changes to the tracks that exist within it.