It’s C or A but put what you think is the best answer
The answer is D., onomotopeoia
That a disease can be very contagious and risk life to die.
People were eager to return to Philadelphia and get back to their normal lives. George Washington was especially interested in returning to Philadelphia so Congress could meet and keep the government running. However, people often returned too soon, and the yellow fever was not yet gone. It was still lingering in people's homes, which caused people to continue getting sick.
It is called the diction.
Angst, in writing, is like a dark story. One that has a sad, dark, etc. plot to it. On the other hand, tone is how a writer feel towards a topic.