Which of the following is an example of copyright infringement?
1) In his presentation, Matt cites the work of economist Thorstein Veblen.
2) Grace uses a photograph in her presentation without getting authorization from its owner.
3) Yusuf uses a long quotation in his speech without giving credit to its source.
4) In her speech, Hla presents an idea she read about in a business journal as if it was her own.
5) Logan reads an excerpt from a book during his presentation with the approval of the author.