Because it was being killed for food for families.
The best answer is D
Violence - Black who tried to vote were threatened , beaten and killed. Their families were also harmed. Sometimes, their homes were burned down. Often, they lost their jobs or were thrown off their farms.
Poll tax - In southern states , many blacks could not vote because they could not afford the poll tax which amounted to $ 25 to $50 in today's money.
Literacy tests - Many black and white people could not read or write. White officials usually claimed that whites who were illiterate could understand what was being read to them even though they couldn't read and so were still allowed to vote.
But when it came to illiterate blacks, the white officials claimed they could not even understand what was read to them, and on the basis of that, they were not allowed to vote.
It sorta started at the Munich Conference, when Hitler demanded the Sudetenland, and the democratic powers gave it to him, to try to save Europe from war. Then Hitler took the Rhineland, a demilitarized zone between Germany and France, they did nothing. Then Hitler invaded Poland, and after plenty of delay (known as the Sitzkrieg, a play on words off of the German strategy of Blitzkrieg), they finally declared war on Germany.