Question

what happened as a result of the voting rights act?

election day was changed to a wednesday
a large number of white people moved to the south
the number of white voters decreased by hundreds of thousands
the number of registered black voters increased by hundreds of thousands

Explanation:

The Voting Rights Act aimed to eliminate barriers to Black voter registration. After its passage, the number of registered Black voters increased significantly (by hundreds of thousands) as discriminatory practices were challenged. Other options are incorrect: election day wasn't changed to Wednesday, the Act increased Black (not decreased white) voter numbers, and it didn't drive white people to the South.

Answer:

the number of registered black voters increased by hundreds of thousands