Answer: The average rainfall in the area however, will never be enough to support farming.
Explanation: However, is changing the point of view and or idea, putting a pause there indicates this.
C. assuming this paper is gonna be argumentative. it would bring up the most accurate results for a search
I don’t know the context here but i think it would be beneficial for an author to put a character in, in the spring or summer time
"Pennies" is the subject; as that is what you are measuring and also what you are focussing on. To go further; the jar could've been a mug or cup etc.
Hope this helped :)