Answer:
С
The scraps of paper reveal how the Superiors graded their new recruits.
Explanation:
Thar is the right answer to the question. By unsealing their fate, it was trying to let the audience know that, they got to know how things are done <em>regarding to new recruits through the information which they got from the scraps of paper. This is unlike when they were in the dark about the whole process.</em>
I would say that Orwell uses satire and allegory to reveal the evils of a totalitarian government. In my opinion, the answer is C.
They built 4 tree huts ;)