According to research, the proponents of Liberation theology before and after its formalization include Francis of Assisi, Leo Tolstoy, Martin Luther King Jr., and Desmond Tutu.
Liberation theology is known for being a religious movement that is centered on the marginalized societies or people lacking in social, political, or economic equality and justice.
Liberation theology began with Gustavo Gutierrez in 1971 as the founder of the movement.
Due to its principles and beliefs, people like Francis of Assisi, Leo Tolstoy, Martin Luther King Jr., and Desmond Tutu supported the movement or its principles at one point or another.
Hence, in this case, it is concluded that the correct answer is "Liberation theology."
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