Answer:
The options are
A. To ensure that only well-informed people voted
B. To keep illegal aliens from voting
C. To keep blacks from voting
D. To keep schoolteachers employed
The answer is C. To keep blacks from voting
Step-by-step explanation:
The purpose of the literacy tests that were used in the southern states after 1870 was to keep blacks from voting.
During this period there was a high degree of racial segregation and slavery and efforts in the abolishment were ongoing. Most of the people knew the blacks were used as slaves and didn’t go to school . They didn’t want them to participate in the electoral process which made them to bring up literacy as a criteria for voting which was later kicked against.