I believe the answer is either A or D. However, I think D sounds the most fitting but like i said, it could be either one. :)
Answer:
Can earthquakes be predicted?
Earthquake weather?
How long does an earthquake last?
Why are aftershocks recorded?
What is the difference between magnitude and intensity?
What is the Modified Mercalli Intensity Scale?
What is the Richter Magnitude Scale?
Organization of Petrochemical Exporting Countries