What was the “brain trust”? a. a group of experts that testified before the united states congress in defense of the hoover administrations' policies b. a group of experts who worked outside the government and advised fdr on his new deal policies c. a group of civil service workers that fdr by writing his speeches and composing new legislation d. a group of government officials who worked to destroy the new deal

The correct option is B.
A brain trust refers to a group of experts, usually academicians, who advises a government official on a particular issue. These experts are usually consulted because of their expertise in a specific field. They serve as advisers to a government on specific policies.

The correct answer is A) W. E. B DuBois.

The civil rights leader that said that blacks were entitled to social and political, as well as economic equality was W. E. B DuBois.

Dubois (1868-1963) was one of the most important African American activists that fought for the end of racial segregation in the United States. He co-founded the National Association for the Advancement of Colored People. He critiqued and confronted the ideas of other important black activists, Booker T. Washington, who thought that the way for black people was through education.