Tricky question, since one should notice the key word inherit to choose the right answers. Two-three of the answers are just out of scope -- ideas that do not have a correlation with the text.

Hi .. I cant find link to OA here. Can you please help?

Added the OA. It is C

Sorry Changing the timer the spoilered OA changed.

Fixed

Many good questions posted just have the right option available to choose. Knowing the answer beforehand will wane the zeal to solve it. Please rectify. There are plenty of them.

Children whose biological parents both have Tic Syndrome Z (TSZ), which is characterized by the involuntary contraction of certain muscles, are about four times more likely to develop such contractions than are children whose biological parents do not have TSZ, It is likely, therefore, that predisposition to TSZ is an inherited trait.

Which of the following, if true, would most strengthen the conclusion above?

The premise provided summarizes and concludes that Tic Syndrome Z (TSZ) is a hereditary trait. So, in order to strengthen this conclusion, we need to find an option that supports the statement "Tic Syndrome Z (TSZ) is a hereditary trait".

(A) Children whose parents have TSZ are more likely to develop TSZ if they are under unusual stress at school or at home than if they are not under such stress. - Does not strengthen the conclusion as it puts forward alternative reasons other than TSZ is a hereditary trait.

(B) Children whose biological parents do not have TSZ are more likely to develop TSZ if they are raised by adoptive parents with TSZ than if they are raised by their biological parents. - States that TSZ is a transmitted through parenting. Does not strengthen the conclusion.

(C) Children whose biological parents have TSZ are as likely to develop TSZ if they are raised by adoptive parents who do not have TSZ as if they are raised by their biological parents. - Clearly defines that TSZ is a hereditary trait and further strengthens it by stating that acquiring of TSZ has not got anything to do with whether the child is parented by the biological parents or adoptive parents. Hence, it is the answer.

(D) Children whose biological parents have TSZ and who develop TSZ usually avoid developing a severe form of the syndrome if they seek treatment for TSZ shortly after developing the first signs of it. - out of scope.

(E) Children with TSZ whose biological parents do not have TSZ are less likely to have the syndrome diagnosed when symptoms first appear than are children with TSZ whose biological parents have TSZ. - out of scope.

Hello from the GRE Prep Club VerbalBot!

Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.