In this passage, the Iroquois Constitution specifically says "a large bunch of shell strings....shall symbolize". It then goes on to specifically say what the shells symbolize - the coming together of the nations. The other options are simply not valid. This passage does not tell us anything about consequences or the history of each tribe. While it does mention the different Lords, it doesn't say what their traditions are.
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.
