The correct answer is option D. "African Americans".
Explanation:
The use of literacy tests during the post-Reconstruction years was a tactic used by southern states to prevent that African Americans exercise their right to vote. This strategy caused that the registration of African Americans dropped significantly. However, the literacy tests excluded that many white people were registered as eligible voters either because many white people could not read or write.
The group which use literacy tests during the post Reconstruction years is the African American and the correct answer among the choices you give is letter D. I hope you are satisfied with my answer and feel free to ask for more if you have a question and clarifications
