Final answer:
An earthquake in southern California is not considered an extraordinary item since the region is prone to seismic activity due to the San Andreas Fault, which has a history of significant movements and tension buildup.
Step-by-step explanation:
The statement that an earthquake in southern California is an extraordinary item could be interpreted in a variety of contexts, but in geological or financial terms, the occurrence of earthquakes in this region is actually not extraordinary, as southern California is prone to seismic activity due to the San Andreas Fault. Earthquakes in this region are quite common, with the San Andreas Fault having a history of significant activity, including regular movements that contribute to tension release between tectonic plates.
In terms of frequency and geological expectations, an earthquake in southern California would not be considered an 'extraordinary' event. The area along the San Andreas Fault is well-known for its seismic activity, and sensitive instruments have recorded the continuing buildup of tension in the area, indicating the potential for future seismic events.
Therefore, in the context of frequency and anticipation, based on geological studies, the answer to the question would be false.