Answer:
Option C, It helped former slaves for several years before resistance from white Southerns forced it to shut down
Step-by-step explanation:
During the reconstruction period after the Civil War, Freedmen's Bureau was oriented to help black people getting who recently got freedom from slavery and the poor whites in the south. They Bureau provided basic necessities of life such as food, shelter, clothing, land etc. Later the white in Southern part opposed the reconstitution measures and demanded rule of whites in south thereby failing the agenda of Bureau.
Hence, option C is correct