TOEFL Reading: ETS-TOEFL阅读机经 - N8Q869FZ69Z66H1QL$

The author discusses "the San Andreas Fault near Los Angeles" in order to A. contrast past and future patterns of earthquake activity in the area B. give an example of an area where underground earthquake activity is apparent from land changes above the ground C. explain why recent earthquake predictions have increased accuracy D. suggest that some areas of earthquake activity are easier to monitor than others