Answer: B. He uses parallelism to appeal to logos.
Step-by-step explanation:
He is using parallelism which is the usage of similar words in the sentence, in this case ''We have done everything that could be done'' and then he is appealing to logos which is considering the logical reason for what they did everything.
- Answer A) is incorrect because there is no personification in this sentence.
- Answer C) is incorrect because there is no simile in the sentence, there is the only parallelism.
- Answer D) is incorrect because there are no metaphors or pathos( referring to the emotion) in the sentence.