(A) Ctrl+A
(B) Ctrl+B
(C) Ctrl+C
(D) Ctrl+K
🧠 Explanation:
- Ctrl + A is the standard shortcut used in most software to select the entire content of a document or text field.
- It works in word processors like Microsoft Word, text editors, web browsers, and many other applications.
- This shortcut saves time by eliminating the need to manually highlight all the content with the mouse.
- Other options like Ctrl+B (bold), Ctrl+C (copy), and Ctrl+K (insert hyperlink) serve different functions.