The challenge that the Bourbons did NOT face in their efforts to control Georgia politics is:
The Freedmen's Bureau sponsored African-American candidates to run as Democrats for Congress.
This scenario would not accurately represent the political landscape, as the Freedmen's Bureau primarily focused on assisting freed slaves and had limited involvement in supporting African-American candidates specifically within the Democratic Party, which was traditionally associated with the Bourbons and was not supportive of African-American political agency during that era. The other options reflect real challenges faced by the Bourbons in maintaining control amidst various populist movements and democratic reforms.