Answer:
D
THe one man in all the oceans is a sign of loneliness
Hello. You did not say what text this question refers to, which makes it impossible for your question to be answered efficiently and specifically. However, to try to help you, I will show you what an argument is and how are the rhetorical appeals that can be used in one. This can guide you in finding the correct answer.
An argument is a position on a theme, where the author demonstrates what he thinks about something or how he understands how such things happen. In addition to presenting a position, the argument presents evidence that provides veracity to the position, showing how it is real and relevant.
To enhance the argument and make it more powerful, rhetorical appeals can be used. These appeals are ethos (which refers to ethics), logos (which refers to logic) and pathos (which refers to emotions and feelings), which are used in sentences to strengthen an important point of the argument and to converge the audience.
I believe the answer to your question is "wood". This is because people usually get slivers from wood, and considering the start of you last word, it seems to make sense. Also the previous analogy thing, Speck is to dust, is a very realistic analogy thing, so the next one would probably need to be realistic. I hope I helped! And if you need more information, please tell me. :D