I'd be able to answer this but I don't know what the arthor wrote. Could you please comment on this with a picture of what the arthor wrote please ☺?
Hey!
An article is piece of writing included with others in a newspaper, magazine, or other publication. Those can be academic, laboral or just personal.
Now, the subject of an article can automatically limit the timeliness, the audience and purpose. The subject acts like a border to your article and you will have to respect that limit. For instance, every article has a subject, but it will be conditioned by the subject of the writing piece; and, when writing, you have to identify your audicience and it has to be closed relationed with your subjects, because there are some topics for specific public.
In that sense, the only aspect a subject of an article can not limit is A: effectiveness. A topic by itself does not do anything, it is the way of presenting and writing about it. In addition, there is no any way to know if the article will produce the expected effect on the readers just because of the topic.
Hope this helps!
Reflexive writing is written for publication, while extensive writing is written for the classroom. Reflexive writing is not meant to be shared, while extensive writing is. Reflexive writing is used by accomplished writers, while extensive writing is used by beginning writers.
Reading can improve the memory. Reading helps you maintain concentration, and allows your mind to process the events happening before you.