Refer to picture

4. Define fair use and give examples of the four factors considered in deciding whether the use of another's copyrighted work is legal (a. the purpose and character of the use: b. the nature of the copyrighted work; c. the amount of the portions used; and, d. the effect of the use upon the potential market). Why is the issue of fair use described as a "flash point" for digital media? Support your discussion with reliable sources.