Which of the following best defines the word revolution as it is used in the
passage?
cruel and unfair treatment by people with power over others.
O a form of government in which people choose leaders by voting.
O
the usually violent attempt by many people to end the rule of one government and
start a new one.
the set of ideas and beliefs of a group of political party.

The sentence that best defines the word revolution as it is used in the passage is "the usually violent attempt by many people to end the rule of one government and start a new one".

What is a revolution?

This refers to a movement that is often violent which an attempt to overthrow an old regime and complete change in the fundamental institutions of society.

Hence, because it is also a fundamental sudden change in political power and political organization which occurs when the population revolts against the government, it is best defines as it is used in the passage is "the usually violent attempt by many people to end the rule of one government and start a new one".

Therefore, the Option C is correct.