the answer is D.
Special districts (also known as special service districts, special district governments, limited purpose entities, or special-purpose districts in the United States) are independent, special-purpose governmental units that exist separately from local governments such as county, municipal, and township government, ...
I believe the correct answer would be "women earn about 75% of what men earn" although I believe the actual number is around 20% less than what men earn. It's quite unfair.
Literacy tests were banned by the Voting Rights Act of 1965. They were deemed to be discriminatory and unconstitutional.