When researching the rising cost of higher education, the most useful sources would be option A, B, and E.
Explanation:
- For option A, "a graph on tuition at state universities". This source is helpful because graphs synthesize large information in a way that it is easy to understand and interpret the data collected.
- For option B, "a 2002 law that increased student aid". This one helps the researchers evidence that the issue of the matter is a reality. If a law increased student aid, it shows that students are having economic problems and perhaps it is because of the rising cost of higher education among other reasons.
- For option E, "a journal article on college administration". Journalism is a trustworthy source of information because of peer-review. It adds more credibility.
Unlike the rest of the options (C and D) that doesn't contribute to the research. First, because school graduation rates are not the issue of matter neither it is expense reports.
