Premise : Many studies show that the people who use anabolic steroids commit violent crimes at a greater rate than the people who do not use it. That is, for example, people who use anabolic steroids commit crimes say 5 in 100 days as opposed to people who do not use steroids who commit crimes say 1 in 100 days.
This situation of the users of anabolic steroids is called steroid rage or roid rage and this is suggested by the studies.
So, what the above situation says is that if you use anabolic steroids , you tend to commit more violent crimes, or show more aggression.
Conclusion: The above situation is mistaken since, the people who show more aggression and who commit more crimes tend to use steroids and not the other way around.
Question Stem: Which of the following strengthens..
A: This says that if you use anabolic steroids you become aggressive since they elevate the hormone levels associated with aggressive behaviour. This is weakening. Wrong.
B: This says the aggressive behaviour decreases when the users of anabolic steroids stop the usage of anabolic steroids. This again weakens the argument. Wrong.
C: This is the trap answer and one may select this when in a time constraint. This actually says individuals who use steroids have aggressive behaviour and greater sex drive that is if you use steroids you tend to become aggressive. This is perhaps the restatement of the premise. This once again weakens the conclusion so this is wrong.
D: This answer option says that those who use steroids do not really or actually have greater aggression than others who do not use it. That is in terms of violent crimes both show equal rates ... since crimes are committed when accompanied with aggression. That is both show 5 in 100 and 5 in 100 as discussed in the first few lines of this post. So, this actually strengthen the conclusion. Lets hold this answer.
E: This answer says if a person is proved guilty of a crime when the person was actually using steroids, is not proven guilty of a crime again, even if the person continues to use steroids. This answer doesnt really compare with people who are not using steroids, and in clear words it says the crime rate doesnt differ or comes down even if one continues to use steroids. This is a weak strengthener with no comparisons with the normal people.. if there were any comparisons then this would go as the right answer.
So , D vs E.. D wins the game.
D is the right answer.
@harsa3699, Thanks for the explanation. Really worthy