Need help from experts.
In MGMAT SC guide, the statement , "Regina returned the dress to the store, which was torn at one of the seams" is corrected to "Regina returned the dress, which was torn at one of the seams, to the store".
I am confused on which vs that here. I thought that the modifier "torn at one of the seams" was an essential modifier since this information was needed on why the dress was returned to store. If so, the corrected sentence should be "Regina returned the dress that was torn at one of the seams to the store". Can you please help?