Because she is going to school exactly at 9 a.m.
When dividing a heading in an outline, it should be divided into 2 or more parts
Hi there!
In the passage, there is a supporting detail that contains a statistic. I think that the detail is C. At this time, Earth is about 152 kilometers from the Sun. This is a fact and was most likely researched. It is the best answer out of the three options.
Hope this helps! Let me know if you need anything, and have a wonderful day! : )