Casey: We have 20 teachers sharing a photocopy machine in the second floor teachers’ lounge. The machine is always breaking down, which means that 20 people is too many people to make use of one machine.Corey: I don’t agree. We have 25 teachers sharing the copy machine in the first floor teacher’s lounge. However, our copy machine almost never breaks down. Our machine must be better made than yours.Which of the following, if true, would support Corey’s argument the most?

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.