I think the best answer is E.In A, it is illogical to say that presidents to be registered organizations. Why? of campus social groups modify presidents, hence the subject of the verb to be registered is presidents.
Similarly, B can be eliminated based on the grounds of the illogical meaning of presidents to be registered organizations. In addition, B also has an additional error of introducing examples with like. Such as is more appropriate.
D also introduced examples of campus social groups with like and this is not acceptable. Such as is appropriate.
The main difference between C and E is based on meaning. In E, such as fraternities and sororities clearly introduce non-essential examples of campus social groups. C however, opts for fraternities and sororities as though it is a non-essential appositive phrase to modify campus social groups, as though these are the only organizations on campus. Also, if C is trying to use concise language in the sentence, why then would it utilize the indirect form
campus social groups to be registered by their presidents as organizations instead of the direct form
presidents of campus social groups to register their organizations? I, therefore, rank E ahead of C. This is quite a tricky SC question; hopefully, I will get to know whether my reasoning was right or wrong after the OA is revealed.
Pressured by alumni, who tend to censure any measure that would significantly affect the social traditions of their alma mater, the university administration has shied away from enacting an initiative that would require presidents of campus social groups, such as fraternities and sororities, to be registered organizations before these organizations could serve alcohol at social events.
(A)
presidents of campus social groups, such as fraternities and sororities,
to be registered organizations(B)
presidents of campus social groups,
like fraternities and sororities,
to be registered organizations(C)
campus social groups, [
such as]
fraternities and sororities,
to be registered by their presidents as organizations(D) campus social groups,
like fraternities and sororities, to be registered [
as] organizations by their presidents
(E)
presidents of campus social groups,
such as fraternities and sororities,
to register their organizations