What is a backing?
Oftentimes, there may be a chance that the audience will question the warrant, or in other words, disagree with the authors unstated assumption. In order to have an effective argument, the writer needs to back it up by providing an argument in its support. "Backing is the argument that supports the warrant." It may be short or long. "Its goal is to persuade the audience to accept the warrant." (Ramage, Bean, and Johnson, 77)