I'm sorry but this is just a article, where is the question? What is your question?
Answer:
The definition of "tone" in literature is the way the author expresses his attitude through his writing. The tone can change very quickly or may remain the same throughout the story. Tone is expressed by your use of syntax, your point of view, your diction, and the level of formality in your writing.
Explanation: Hope it helps!!
Sorry I accidently put it in the comments and not the answer!
The answer is A because objectivity means without bias. The excerpt did not rely on understatements or irony, so that eliminates B and D. Answer choice C is also incorrect because the excerpt shows that the conditions were bothersome it was just described without emotion. Leaving us with choice A as the correct answer.