The correct answer is C) It restructured tribal governments.
The Great Depression improve the Native Americans' organization in that it restructured tribal governments.
But also Native Americans were impacted by government interventions in that the Bureau of Indian Affairs created reservation jobs for Native Americans to improve the tribal economy.
The Bureau of Indians Affairs was formed on March 11, 1824, by John C. Calhoun. Since its conception, the Bureau protects the assets and enhanced the quality of life of American Indians. That is what the Bureau did during the Great Depression in America that began in October 1929, after the stock market crash in which thousands of people lost their jobs, many companies closed, and banks went into bankruptcy.