Based from reading this short passage, I believe that the authors point in this above was to practically give information above the word "solar flares". And by the author doing this, he would be giving the reader citing points of this.
Your answer: <span> It cites expert testimony about solar flares.
I would say that this would most likely be the answer mainly because when citing, this would mean that there would be an expert that would study basic needs and understanding this kind of things to understand.</span>
Create a picture in the readers mind
1. The Eiffel Tower is so beautiful at night. We will have visited by the day we arrive there.
It would be A because it is in chronological order a.k.a order that works with the timeline.
