The correct one as per MGMAT SC
The principal tried to calm the worried parents of the students who had disappeared in
Yeah, was quite close.
Just need an opinion on the phrase "worried students' parents".Why this phrase isn't correct?
Does it sound clear to you? This is genitive case (the case denoting possession or close association). I think Manhattan SC mentions something like "you can't go too far inside the genitive", I don't remember precisely.
The principal tried to calm the worried students' parents, as a result of those students disappearing in the storm.
Leave alone the second clause (please write if it's not clear, I'll try to help).
The first clause is ambiguous. Were the students worried or the parents? -> Grammatical error.
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