Selecting text is a basic editing function used in Word. In most cases, text must be selected before it can be formatted. Once your text is selected, you can format, cut, copy, or paste your text. For example, by selecting specific text you can change the font size of only the selected text. Several methods are available for selecting text. use the optiong that is most convenient for you or use the technique that best fits your task. Keyboard shortcuts can also be used to select text.
1. From Keyboard (like, Ctrl+A, Shift+Arrow Keys)
2. From Mouse (Like Double Click, Left Click, Tripp Left Click)
3. From Keyboard & Mouse (Like Ctril or Alt, with left click)