What of the following is one of the three main sources of ideas for bills ?

Assuming that this is referring to the same list of options that was posted before with this question, the correct response would be an "individual Congressman," since these legislatures can propose practically any bill idea. 

Just think, why was it effective? -it appeled to critics because it was written well, that made it noticeable to the public including the white population-it was also recognizable to the african americans because it was about their heritage.-it was powerful just keep finding more points and elaborate on them. message me if you need more