Answer: Pathos
Explanation: The author is most likely using pathos, or emotional appeal, in this excerpt. The language used in this sentence is designed to evoke strong emotions in the reader, particularly a sense of urgency and moral outrage. Words like "quickened," "roused," "startled," "exposed," "proclaimed," and "denounced" all contribute to this emotional tone. The author is trying to persuade the reader to take action by appealing to their emotions and sense of morality.