Answer:
He orders the bins in the store-shed to be filled with sand, hidden beneath a layer of grain and meal, and then shows them to Mr. Whymper.
Explanation: He wanted to fool him into thinking that the farm has plenty of food.
The correct answer is D) There is no single topic sentence. a topic sentence is used to summarize what the writing is about, and there is no sentence that does that in this piece.
Yes it is written correctly.