What type of language is used by an author to hint deeper meanings

Symbolic language is used by an author to hint at deeper meanings.

Explanation:

Symbolic language is one of the most used ways to evoke feelings in the readers, as well as creating the feeling around the character and to set the mood of the story, symbols present in all nearly all written material, this helps to create the connection with the reader and to help them understand better the story and the characters,

the correct answer is the first option "the bolkshevik revolution". the passage makes reference to many of important events that occured in the revolution, such as the assemblies, in this case the animals are gathered in an assembly after a protest, the murder of fellow partners, the speeches given by the leader of the revolution, among other aspects. the last choice is possible, but in this passage in particular it is not emphasized the fight between the characters, that is the two pigs, that represent lenin and stallin.

your eyes are the first things that you open