Answer:
The answer to this question would be A: How a bill becomes a law.
Explanation:
The purpose of a research paper is basically to expose a topic that is of interest and is debatable, that can be proven through the use of data, but also, that needs research in order for it to be accurate. However, one important fact about a research paper is that the topic selected needs to be open enough so that research can be done, but narrow enough that you do not lose yourself in the branches of the multiple subtopics that could come out if the main topic is too broad. As such, a really important strategy for a writer is to take a topic, and select from all the possibilities of that topic, the one smaller issue that he/she would like to debate, and research on. In the options given, except for A, the other options are too broad, and offer too many branches, that could be open for debate and research. This is why the answer is A, because it is a topic of research, but it is narrow enough to avoid unnecessary loss.