What is the default file extension created by notepad?

The correct answer is C. .txt.

Notepad is a basic text editor that is included with most versions of Microsoft Windows. It is used to create and edit plain text files. The default file extension for a text file created by Notepad is .txt.

A .doc file is a Microsoft Word document. A .html file is a HyperText Markup Language document, which is used to create web pages. A .tif file is a tagged image file format, which is a type of image file that is often used for scanned documents.

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