Which document type is protected by copyright upon its creation in a tangible form?

The correct answer is that all of the mentioned document types are protected by copyright upon their creation in a tangible form. Copyright protection applies to a wide range of creative works, which include written works, online publications, and artistic images.

When a person creates a written document, such as a book, article, or report, it is automatically protected by copyright as soon as it is fixed in a tangible medium; this includes any form of physical representation or digital recording. Similarly, online publications, whether they are blogs, e-books, or digital articles, also gain copyright protection when they are created and saved in a digital format. Artistic images, including photographs, paintings, and graphic designs, follow the same principle; copyright is automatically applied as long as these works are fixed in a physical or digital medium.

This broad term of "all of the above" emphasizes that copyright is a fundamental legal concept that encompasses various mediums of creative output, thereby protecting the rights of creators across different forms of expression.