The first-aider will be ready with a first aid kit and will be on guard in case of accidents or injuries. First aid means, the first action done on someone who is injured or not feeling well within the designated place. He/she must know some first aid treatments or methods, such as treating a cut or bruise, giving artificial ventilation and CPR, etc.
D) the sky displayed a peculiar coloring
I think the first quote best develops the central idea that African Americans have been intentionally block from voting in election.
"Every device of which human ingenuity is capable, has been used to deny this right."
Meaning that every device humans have have been used to deny the right to vote in elections.
