You can change pitch or use a pause to select all that apply to put emphasis on a certain point to alter the mean of a word to end a sentence to give extra meaning to what is said to show emotion to interact with one audience to show which part of speech you mean to make the meaning of a sentence clear to keep from being monotone

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.