5. Out of the following passages, only one is an argument. Which is it? A. Since the last earthquake in California, engineers have been investigating what happens to man-made structures during a large seismic event. They were surprised that a section of the Bay Bridge, which connects Oakland to San Francisco, fell like a trapdoor. They also discovered that in some of the older double-decker freeways the joints that connect the lower column to the upper column may be suspect