Final answer:
The 2010 Census improved the accuracy of the nation's racial composition by allowing individuals to report multiple races and providing a separate question for Hispanic origin.
Step-by-step explanation:
The 2010 Census included features in its race and ethnicity questions that aimed to improve the accuracy of the nation's racial composition. These features included allowing individuals to report more than one race to indicate their racial mixture and providing a separate question for Hispanic, Latino, or Spanish origin. By allowing individuals to select multiple races and distinguishing Hispanic origin, the 2010 Census aimed to provide a more comprehensive and accurate representation of the complex racial composition in the United States.