Find the shortcut key used to apply bold formatting.
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Ctrl + b
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Alt + b
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Shift + b
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Ctrl + o
A
Correct answer
Explanation
Ctrl+B is the universal keyboard shortcut for applying bold formatting to selected text across all major applications and word processors. This is one of the most fundamental formatting shortcuts. The other options are incorrect: Alt+B has no standard function, Shift+B does nothing in most programs, and Ctrl+O opens the Open File dialog.