Ask the young men of the tribe their opinion.
Option C is correct answer.
About the speaker 'Chief Joseph':
Chief Joseph was an indigenous resistance leader in the United States. He was chief of the Nez-Perce tribe and surrendered to his tribe after a long retreat. at the moment of his surrender he gave a moving speech in which he said that the chiefs of his tribe were dead and the youths were making the decisions. To know if he was telling the truth, Chief Joseph's enemies would have to ask the young men in the tribe what their opinion was about what Chief Joseph said.
He was one of the notable Indian chiefs who fought against the US Army during the Westward Expansion in the latter 19th century. In his surrender speech to General Howard on October 5, 1877, he tells him that his "chiefs are dead and the young men are the ones who are taking the decisions". General Howard could survey the young men in order to validate what Chief Joseph is saying.
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