The central ideas developed in Animal Farm are:
The Animal Farm is a satirical novel which has a grand theme of capacity of the ordinary individuals who still continue to believe in the idea of revolution.
Chapter 3 of this novel shows that the animals work really hard to reap the biggest harvest they have ever seen. The intelligence of the pig is used to supervise all the other animals who are working on the farm.
So, central idea here is: The pigs use language and propaganda as tools.
Chapter 4 extends to the allegory of the Russian Revolution to the Russia's period of interwar. It talks about establishment of Communism.
So, the central idea here is: Horses are better workers than donkeys.
Therefore, the correct options are (1) and (3).
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