Answer:
The answer is C.) It highlights the critical tone of the essay
Step-by-step explanation:
I took the test. As for an actual explanation, I'm not exactly sure but we see that he is definitely not uncertain or glum. He is very certain he will keep writing and nowhere is any sad or "glum" language used. I think if we take the phrase "scraps of useless information" alone it definitely sounds whimsical, but as a part of the whole excerpt, it helps to emphasize his seriousness to continue writing. And being critical is the closest thing to being serious. Anyway, I hope that helped in some way.