Multiple choice Using Windows Explorer, a plus (+) sign in front of a folder indicates an open folder the folder contains subfolders a text file a graphics file Reveal answer Fill a bubble to check yourself B Correct answer Explanation In Windows Explorer's tree view, a plus (+) sign (or triangle) next to a folder indicates that it contains subfolders and can be expanded to show them. Once expanded, it changes to a minus (-) sign, and if empty, it has no sign.