Answer : 2. "status bar"
Explanation :

1. Status Bar is the horizontal bar at the bottom in MS Word 2010, which has many options like page number, word count, etc.

2. A status bar is located at the bottom of an Internet browser window or application window.

3. It displays the current status of the web page or application being displayed.

4. The status bar is the area at the bottom of the Word window that indicates information about the current document.

5. A status bar is located at the bottom of Internet browser windows and many application windows and displays the current status of the Web page or application being displayed.