According to this passage, the king leopold justify his treatment of the congolese people by saying The congolese were an inferior people who needed harsh treatment for them to learn how to work.
The congolese were treated different as a result of the belief that were an inferior people and due to this they should not be considered to be given the treatment that were been given to others and they needed harsh treatment for them to learn how to work.
In conclusion, when the king came out to discuss about this, he justify his treatment of the congolese people by saying they were inferior.
Therefore, option D are correct.
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