Answer:
If I am understanding the question correctly it is B. But am not sure about the question itself.
D. Bc the others don’t even make sense . So D is ur answer
The correct answer should be A) causes of volcanic eruptions. This <span>topic is both appropriate and narrow enough for a research paper on geology because it constitutes a specific subject wherein no complex research is needed. All the other choices require extraction of details in simpler discussion.</span>