Answer If you're into mangas then I would recommend Blackbird to me it was such a good book but it's a series of 18 and I swear It will make you cry
An editorial include an opposing viewpoint because they need to recognize it. If there is no opposing viewpoint, they look like they think there is only one side and no one else. Opposing viewpoints are very important because first, you can recognize them, and second, you can make corrections of their stance.
The last one I believe is proofread
Answer:
in my opinion C. section headings
Explanation:
that is because italic is not as good at grouping info, illustrations well I'm not sure about that one, diagrams is more of giving a visual of the groups but in writing that is not as handy as headings to clarify what you are reading.