Since 1970, the town of Hotspur, New Mexico, has drawn water from the Makalesh River, which feeds Lake William. If the town’s water use continues to grow at its present rate, in about 10 years the water level of Lake William will inevitably decrease to the point that it can no longer support its biologically fragile population of fish.The prediction above is based on which of the following assumptions?

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.