Critical Reasoning

A recent report determined that although only 10 percent of those in police custody in the city of egan volunteered to undergo a polygraph test,40 percent of those related from custody without being charged had volunteered for polygrapic test.Clearly,suspects in custody who had volunteered for the polygraph test were much less likely to have committed their crime than those who did not volunteer.

Which of the following is an assumption on which the argument above depends?

A) Some of the people in police custody who had volunteered to undergo the polygraph test were not released witout being charged

B) Suspects who volunteer to undergo polygraph tests while in police custody for an alleged crime are more likely to be innocent of that crime

C) The number of suspects released from police custody witout being charged was greater than the number of suspects who volunteered to undergo a polygraph test

D) Some of the suspects who were not released from police custody were suspected of having committed more than one crime during the time period covered by the report

E) The city of egan has a higher crime rate than other cities of its size



OA B

Source: Princeton Review