Argumentative work bases itself on establishing a position and defending it, as well as taking the opposing argumentation into consideration. This type of style can take many forms and perform many functions ranging from plain informative pieces to mediums of attack. To make a competent claim, the writer must use evidence. The collection, analysis, and generation of pertinent evidence are fundamental. All types of informative essays require a well-structured thesis statement. The statement, usually only one sentence long , propels the composition forward and sets it into a clear direction for the audience.