Answer:
C. "She should quote the second sentence directly, because it establishes important supporting evidence in a unique way."
Explanation:
I think this one is correct, however I am not positive, it's really just a guess. The first sentence is common knowledge and you shouldn't need to add what the readers already know if it's the main idea. The second sentence isn't necessarily common knowledge and should always be cited.
Hope this helped, let me know if it's right or not.
My personal recommendations would be to
A ) Make the subject shorter, like "Reason for Absence" or "My Absence"
B ) Make the email more formal. (You don't have to copy my recommendation word for word but if you want to or use it for reference that works):
"Good Morning/Afternoon/Evening Mrs. __,
I hole you're have a lovely morning/afternoon/evening. Today I was absent and I apologize for the inconvenience. The class meeting didn't appear on my canvas courses and I couldn't find a zoom link. If there's anywhere I can find either one for the future please let me know and again I'm sorry for the inconvenience.
Sincerely,
__"
It might be saying that not everything fun has to be dangerous.