I believe that the most fitting answer for this question would be the third answer, exposition. Expository writing is a type of writing that is used to instruct, inform, or otherwise explain something to its readers. It is centered around a single topic and uses a pattern or a few patterns. It is used often in technical writing. Hope this helps.
The thing that you should not look for when you are revising your own article is over explaining the topic. I think that jeornalists look for details and supporting those details.
