Correct Answer:
Option A. Influenza
During 1918 - 1919, an influenza epidemic killed about more than 20 million people. This epidemic killed more people than were killed due to the World War 1 and is said to be the most devastating epidemic of the history. Among the US troops which were deployed in Europe, more than half of deaths were a result of influenza rather than the killings done by enemy.
I can infer people in the congress can be corrupt and don't do their jobs properly, and are cheating the system treating society poorly.
C. Technically, you couldn't stop people from voting based on their race, but at the time, you could put restrictions on voting. Most white men were educated, and those who weren't could read basic, common words. Black men, historically couldn't read, so literacy tests were an attempt to make it so that black people couldn't vote. Poll taxes were the same way, the white men could afford to pay the poll tax, but the black men couldn't due to their mostly low paying jobs. Lastly, if a white man couldn't read, or couldn't afford to pay the tax, they shouldn't have been allowed to vote, so in order to make it so that they could vote a "grandfather clause" was instated. This made it so that if your father had voted, you could vote. This meant that any white man could vote.