In determining whether the fair use doctrine provides a valid defense to a claim of copyright infringement, Section 107 of the Copyright Act requires that a court weigh all of the following factors except the: Blank______. Multiple choice question. purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes amount and substantiality of the portion used in relation to the copyrighted work as a whole renewability of the subject copyright nature of the copyrighted work