SAT English Practice Question

The author of the text describes the research as being "an ongoing project." In other words, the author is indicating that the research is not complete. For example, the author mentions the "possibility" that other sources of the elements will be identified in the future. What is the most likely reason that the writer points out that the research is "an ongoing project"?

1. A.suggest that the researchers are still learning about the subject of their research.
2. B.convince the reader that the research has been conducted carefully.
3. C.explain why the researchers’ findings are not definitive.
4. D.demonstrate that the research is highly important.