C. Oh no! This is the last day, but it's enough
Thoreau's actions reveal that he believes the society to be corrupt. That is why life in the woods is the best possible option for any human being. Reconnecting with nature and abandoning cities.
B. is the correct sentence, because they use the correct verb tense of notices.
A detail is essential in a passage if it adds to the overall idea of the passage. In this passage, the overall idea is stated in the first sentence, several key human errors contributed to the spread of the Chicago fire of 1871. That means that key details in this passage will be something related to a human error. Out of all of our choices, the first one seems the most like a human error. The second, third, and fourth choices seem more like details then like essential details. That means that the answer to the question is John Dorsey sounded a general alarm during the blaze.
