Answer:
How does one's own body betray a person? Winston means involuntary movements a person might make from bottling up so much emotional and intellectual tension for so long. He once witnessed a man with a contorted face walking by. His expression was involuntary but Winston surely knew the man would be killed.
Explanation:
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Answer: to describe the meaning of the shell strings.
In this excerpt, the author explains to us what the meaning of the shell strings is. He tells us that the shells symbolize the union of the nations. Option B is incorrect, as the passage does not discuss anything related to the consequences of disobeying one's tribe. Option C is similarly incorrect, as the passage does not mention any of the traditions of the Lords. Finally, the passage does not explain the history of each tribe.