jrk23
i wanted to ask "what is the subject of action Verb " showed"....." i think its study not the twins ....but in "C" its correct .... i know we have other error in "c" but please let me know what is the subject for " Showed" ....
As per me its the study that showed the similarities...
Thanks in advance

#gmatninja
jrk23 The intended meaning of the sentece suggests us that the study showed something !! what is that something?? IT IS THE PHENOMENON and not some particular.
The study showed that IT reared part from each other actually have striking similarities..first of all why is the author saying that it is striking?? because if two beings are raised apart from each other we might expect different behaviorial tendencices but the study showed otherwise...now the study did not actually show the "Similarities" but it showed a finding/phenomenon that Identical twins reared apart from each other showed Similafrities...
(C) A recent United States study showed striking similarities in identical twins reared apart from each other that include many idiosyncrasies of behavior.
- IN this option the study actually shows similarities in IT ...by placing the noun (twins) and its modifiers reared apart from each other in a latter modifieeri part we are emphasizing on just the "Similarities" ..but we loose the main emphaisis " identical twins reared apart from each other" ...see " in identical twons....." is modifiying "striking similarities" ..so the latter part becomes additional info ..but this construtions downplays that actual emphaisis !
(D) According to a recent United States study, identical twins reared apart from each other showed striking similarities, including many idiosyncrasies of behavior.
This sentence promotes the main highlight of the study "identical twins reared apart from each other" and then tells us what they found..see by forst proiding context (IT reared apart) the author then provides the main info..by providing the context first we get to know why the study findings were acually great "Striking" ...
If this explanation does not suffice please let me know