I can help you maybe :P:)
The Answer is A. I assure you
It is comparing the speaker's solitariness to that of a cloud
The nineteenth century author who wrote novels that explored themes of the frontier wilderness is James Fenimore Cooper. His works shows the American essentials; that it was timeless just like the wilderness. His depiction of American character is on point and he was considered as the first American who depicted it correctly.
D. She feels bad about missing the meeting.