Another factor that you should consider your paper is the knowledge of your targeted audience their familiarity with the topic of your paper. The rationale for doing something is the reason for doing it. The rationale for using an umbrella when it's raining is the need or desire to stay dry. In writing, the rationale is the reason the author gives or implies that establishes a need for the article. To articulate your rationale, you must explain why you think coverage of your topic is needed by your intended audience.
Different audiences look at the same information from different points of view.
This suggests that the possible rationales for a paper are often numerous. The same information about carpets might be important for residential interior designers, scientists specializing in textiles, or home economists interested in consumer safety. The properties of a particular carpet what it is made of, how it is constructed, and its weave bear on how it looks, how it wears, and how quickly it burns. But the terms defining the problem would differ depending on the point of view the writer and readers take toward carpeting. The significance of the information would differ.