C. Topic sentence
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Answer: The element of Logos
Explanation: Logos is one of the three Aristotle's elements of good communication, it consists on the reliability that you have as a person, due to the logic of your statements or the approach you use to share your knowledge. In this case, Dexter relies on his trainer Ken because he shows him a method to complete his task faster. Dexter respects and follows Ken's instructions because of the accuracy of his philosophy.
Diminish means that it would disappear or get better.
so. C.
The correct answer is B. The sacrifices of fallen soldiers should be honored by survivors.
Explanation
The text is an excerpt from the Gettysburg Address speech that talks about the attitude that citizens should have to strengthen the nascent country resulting from the war. In the speech Abraham Lincoln proposes to continue building the nation together when he says "It is for us, the living, rather, to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced". Furthermore, he points out that this would be a way of honoring the soldiers who gave their lives in the war as he expresses it by saying "that we here highly resolve that these dead shall not have died in vain". According to the above, the correct answer is B. The sacrifices of fallen soldiers should be honored by survivors.
Tone is based on the authors feeling/attitude. Mood is what we, the reader, feels.