Aaron Douglass is the answer i believe
The answer is D.
Traditionally, the groups characterized as untouchable were those whose occupations and habits of life involved ritually polluting activities, of which the most important were (1) taking life for a living, a category that included, for example, fishermen, (2) killing or disposing of dead cattle or working with their hides for a living, (3) pursuing activities that brought the participant into contact with emissions of the human body, such as feces, urine, sweat, and spittle, a category that included such occupational groups as sweepers and washermen, and (4) eating the flesh of cattle or of domestic pigs and chickens, a category into which most of the indigenous tribes of India fell.
If there is a general favor towards certain people, if he were to select otherwise, then people would think he was biased. This would result in a bad reputation towards him, with a worst case leading to him being impeached if the public sees enough corruption.
The Northwest Ordinance of 1787 is significant because it included provisions for territorial growth and the admission of new states.