Excavation of the ancient city of Kanala in western Ghana revealed a pattern of debris and collapsed buildings typical of towns destroyed by earthquakes. Archeologists have hypothesized that the destruction was due to a major earthquake known to have occurred in the area in AD 56.Which of the following, if true, most strongly supports the archeologists’ hypothesis?

About a third of the questions that appear in the GMAT verbal section are critical reasoning questions.Typical questions that appear in critical reasoning (GMAT CR) include strengthening an argument, weakening an argument, identifying the assumption of an argument, mimic the reasoning, identify the reasoning, conclusion, inference, bold faced statements, and evaluating an argument.

Each of the critical reasoning questions is based on a short argument, a set of statements, or a plan of action.