Answer:
Second Option: The other animals realize that Napoleon can be trusted.
Explanation:
"The Animal Farm" (1945) is one of the most famous modern allegorical novella, It is written by George Orwell (pen name, his real name was Eric Arthur Blair).
The passage is from the end of Chapter V, when Snowball has been expelled from the farm. Since Snowball was much loved by the animals and was also a war hero, it was planned to tarnish his reputation among the animals and make them trust Napoleon as their real and trusted leader. Squealer (a pig) was a very skilled persuasive orator. He uses card-stacking (telling lie or partial truths) and repetition techniques of political propaganda to sway the animals' opinion in Napoleon's favor.
Initially (after Napoleon's expelling Snowball), the animals did not seem to have good opinion about Napoleon, but Squealer slowly and cunningly does the job for Napoleon in making the animals realize him a trusted leader.
First and fourth options are totally incorrect. Second and third options are somewhat similar, but second option describes the purpose more clearly and accurately, so second option is correct.
