Colour of Hyperlink by default in MS Word:

The correct answer is Blue. By default, in Microsoft Word (and most other web browsers and applications), a hyperlink appears as blue underlined text. This default blue color (#0000FF) helps users easily identify clickable links. Once a hyperlink has been clicked or visited, it typically changes to purple by default. Red, green, and yellow are not default hyperlink colors in MS Word. Therefore, Blue is the correct answer.