Which of the following would be considered fair use?

1. creating a book out of pictures found online for a school project and then selling the books to earn money
2. creating a four-minutes Microsfot PowerPoint presentation and using a recent Top 40 songs that is not shared as public domain as the background
3. cutting and pasting information to write a school paper and not documenting sources
4. creating a presentation for a class project that was projected on the TVs that greet visitors in the lobby

Fair use is a legal doctrine that allows limited use of copyrighted material without permission from the copyright owner. It is important to note that fair use can be subjective and depends on various factors, including the purpose of the use, the nature of the copyrighted work, the amount used, and the effect on the market for the original work. Based on these factors, the example that would be considered fair use from the options given is:

4. creating a presentation for a class project that was projected on the TVs that greet visitors in the lobby.

Creating the presentation for educational purposes within the confines of a classroom would likely fall under fair use. However, it is always advisable to consult legal professionals or consider the specific circumstances to determine the fair use applicability accurately.