A. voting rights could not be denied based on race.
B. voting rights could not be denied based on gender.
C. poll taxes became illegal and unconstitutional.
D. literacy tests became illegal and unconstitutional.
The fifteenth amendment states that "The right of citizens of the United States to vote shall not be denied or abridged by the United States or by any State on account of <em>race</em>, <em>color</em>, or <em>previous condition of servitude</em>."
There was no mention of gender, so voting for women hadn't been legalized until 1919, making B wrong.
I'm pretty sure the answer is fingerprint scanning.
Yes, initially if anything is written in a formal matter the tone and the context of the text or passage shall be written in a formal matter.