Um may i ask what is your question???
The answer to this question is D. because the narrator only knows the thoughts and feelings of one character and he/she is describing some of the other characters by using the pronoun they.
Answer:
Because people did not know that yellow fever was caused by the bite of an infected mosquito, they assumed incorrectly that people could catch the disease through touch. To help control the disease, letters were cleaned with vinegar before being sent. This did not work, because it was a false cause-and-effect relationship.
I think it is c if so your welcome
Answer:
Good luck- Don't forget periods/punctuations my teachers always get mad, Avoid second-person narrative, limit references and dynamic word choice is key!!
Explanation: