Many preachers during the 1800s felt an obligation to a everyone became christian b everyone became equal c others became preachers d redeem those less fortunate

D. Redeem those less fortunate.

Explanation:

The 1800s saw a lot of Christian movements that redefined the way most people thought of religion. These included the Social Gospel and the Second Great Awakening. Both of these movements placed their emphasis on the resolution of social problems. They argued that in order to achieve salvation, people needed to work for the moral perfection of society. Therefore, many preachers during this time period felt an obligation to help redeem those less fortunate.

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