Argumentative writing is a type of expository prose that
a. tries to convince the reader
b. aims to entertain the reader
c. attempts to puzzle the reader
d. hopes to confuse the reader

The correct answer is a. tries to convince the reader 

Argumentative writing is a type of prose that attempts to convince the reader about a certain stance, perspective or theory when discussing a given topic. In argumentative writing, the writer uses evidence and claims to argue for one side of an argument over other sides. An example of an argumentative prose could have a title such as "Are school uniforms advantageous or disadvantageous to schools and students?" For such an essay, the writer would likely take one side and argue for it, convincing the reader to accept his or her side.