It makes products cheaper for consumers to buy.
The answer is B.
The Great Migration was the movement of six million African Americans from the Southern U.S. to the North. As you probably know, back in the 1900's, segregation of African Americans was on the rise. At the time, the North was not involved in this segregation, so African Americans migrated to the Northern states to escape discrimination.
Committees in Congress are tasked with a specific element of American society to study, organize, or provide information on. One of the standing (aka permanent) committees is the Joint Committee on Taxation. This committee consists of members of both the House of Representatives and the Senate. In this committee, members from both parts of Congress meet in order to try to simplify the tax code and investigation the operation/effectiveness of the internal revenue taxes. These individuals work together to accomplish these goals and possibly change a current tax related structure so that it could be simpler.