Good Evening! Can someone just give a further explanation as to why B is the correct answer?

Hi, I would look around lines 8-12, which tell us that the advocates of readjustment would have supported 5e end of government involvement is specifically native affairs, and broader assimilation into mainstream culture. We also have support after line 20 where we are told that government efforts to sell readjustment involved convincing people to switch from communal to more common individual property ownership.