I think it is c. That one makes the most sense to me.
Working in fields as their job
I believe the correct answer was grain, as Egypt was known for its healthy fields near the mile and delta rivers.
Jane hears weird noises across the Eyre hallway. During the night, she can tell that there are vague murmurs and unknown sound within the walls that causes her fear up until a snarling growl occured where Mason was there in a bloody scene at the third floor and she's wondering why.