Keyboard shortcuts are used to perform common tasks quickly. In most word processors (like MS Word, Google Docs, etc.), pressing CTRL + B applies or removes bold formatting to the selected text.
Option (A) CTRL + C: Incorrect. This is used for copying the selected content.
Option (B) CTRL + B: Correct. This is the standard shortcut to bold the text.
Option (C) CTRL + V: Incorrect. This is the shortcut to paste the copied content.
Option (D) CTRL + I: Incorrect. This shortcut is used to italicize the text.