Answer:
C. White people know what's best for the American Indians
Step-by-step explanation:
In these lines, Jackson implies that white people know what is best for the American Indians. He does so by explaining the way the Indians think, according to him. He tells us that since the Indians often migrate, they are not very attached to their land. Moreover, he says that Indians do not want to mingle with others, and refuse to follow the laws of the white people, so they would be better off isolated. Jackson claims to know not only what the Indian people think but also how their happiness can better be achieved. He calls his proposal "generous."