control+A
Ctrl - A will select all of the text. Using the Shift key and any of the navigation keys, will also select text. These include the arrow keys, Page Up, Page Down, Home and End. Using Ctrl - Shift and the arrow keys will select a word at a time.
You should press CTRL+A to select the entire document text.
Navigations
what keys are used to select characters
the arrow keys.
It allows you to select sentences or images in a document. They can then be cut out of the document and pasted to a different location in the same document or a different document.
To select and highlight text, you can use the keyboard command Ctrl + A (or Command + A on Mac) to select all text in a document or field. To select specific text, click and drag your mouse over the desired text, or hold the Shift key while using the arrow keys to highlight text character by character or line by line.
arrow keys
Your insertion point can be moved by clicking with your mouse at the desired location in a text document or by using the arrow keys on your keyboard to navigate through the text. Additionally, you can use keyboard shortcuts, such as Ctrl + arrow keys, to jump between words or Shift + arrow keys to select text while moving the insertion point. In many applications, you can also use the Home and End keys to move to the beginning or end of a line.
Press CTRL key and while holding it use mouse to select your different pieces of text.
use the arrow keys to move around a to select b to say no
If you're talking about navigating a document or perhaps a website, the arrow keys can move you around. If you're tying a document and want to immediately jump the end or beginning of the current line you're residing on, you can use the HOME and END keys. PAGE UP and PAGE DOWN also will scroll up and down, but will scroll more at a time than the arrow keys.