hi admin, its not clear. could you please explain again?

Official explanation-

One of the reasons this question is difficult is because except for and aside from do not create modifiers; the phrases they begin don’t describe an unnamed subject or object. Once you realize that, you can see that what really differentiates the answer choices is expression, not grammar. Scanning for differences, you can see that have been fulfilled is a passive and wordier alternative to has fulfilled. Eliminate (A) and (E). Next, graduation requirements is superior to requirements for graduation so eliminate (B). Finally, the meaning of (C) is less clear than that of (D) because of the confusing word order of (C). Therefore, (D) wins.

admin,

the kaplan explanation is-

The phrase that they believe calls for the subjunctive mood. It needs to be completed by the verb to be in its infinitive form, allowing you to eliminate (B) and (C). Answer choices (D) and (E) create invalid sentence structures because they offer back-to-back modifiers without joining them with and or some other conjunction. Only choice (A) remains.

But i do not understand how the phrase that they believe is subjunctive?

hi admin, this question is from kaplan. And we can refer to veritas, kaplan for extra questions. correct?

what is wrong with option C?

Thank you admin. Do you think i should use current gmat questions now since i have not taken all official gmat prep tests?

Can the admin please answer to the above question?

Admin it is a crackverbal question. But i do not have explanations for this in the online course.

Yes admin. Thanks much for the explanation.

Yes. thank you admin!