The first response is the only claim that makes sense. To check, let's use the process of elimination.
Second: Calling the scientists' surveys unsophisticated is irrelevant and does not prove that the original claim is correct.
Third: This option does not address the points made by the counterclaim and instead pushes the original idea. It is important to remember that it is supposed to be a response, not a new statement.
Fourth: This response gives up on the original idea and ends the debate, with the counterclaim winning.
While juvenile prisons are used across the country, many people disagree with their uses. Many people who have gone through a juvenile prison say that their experience did not end up shaping who they are today.