GIVING PLZZZ HEPPP Read the excerpt below and answer the question.

Clover warned [Boxer] sometimes to be careful not to overstrain himself, but Boxer would never listen to her. His two slogans, "I will work harder" and "Napoleon is always right," seemed to him a sufficient answer to all problems. He had made arrangements with the cockerel to call him three-quarters of an hour earlier in the mornings instead of half an hour. And in his spare moments, of which there were not many nowadays, he would go alone to the quarry, collect a load of broken stone, and drag it down to the site of the windmill unassisted.

Which theme from Animal Farm is present in this excerpt?

the manipulation of language to conceal the truth
working-class loyalty to a government that enslaves them
the ability of power to corrupt those in control
social-class hierarchy oppressing the working class