PC World: How to back up your Google Photos library now that Google Drive auto-sync has shut down

PC World: How to back up your Google Photos library now that Google Drive auto-sync has shut down. “Google says that Drive sync was causing confusion with users, so Photos will no longer include an option to sync with Google Drive. You’ll still be able to back up your photos in original quality if you choose, but you’ll no longer see new photos appear on your Drive. Similarly, anything you add to the Photos folders in Google Drive will no longer automatically appear in Google Photos.”