Sentence Correction

Hi I am unable to solve this question. I think there is some rule for equal and equivalent. Can anyone help plz
OA is E

According to a study by the Carnegie Foundation for the Advancement of Teaching, companies in the United States are providing job training and general education for nearly eight million people, about equivalent to the enrollment of the nation’s four-year colleges and universities.
(A) equivalent to the enrollment of
(B) the equivalent of those enrolled in
(C) equal to those who are enrolled in
(D) as many as the enrollment of
(E) as many as are enrolled in

sameerbhagwatmba1 wrote:Hi I am unable to solve this question. I think there is some rule for equal and equivalent. Can anyone help plz
OA is E

According to a study by the Carnegie Foundation for the Advancement of Teaching, companies in the United States are providing job training and general education for nearly eight million people, about equivalent to the enrollment of the nation’s four-year colleges and universities.
(A) equivalent to the enrollment of
(B) the equivalent of those enrolled in
(C) equal to those who are enrolled in
(D) as many as the enrollment of
(E) as many as are enrolled in

pls don't provide answers along with question mate!:)

Sure, I will take care next time

sameerbhagwatmba1 wrote:Hi I am unable to solve this question. I think there is some rule for equal and equivalent. Can anyone help plz
OA is E

According to a study by the Carnegie Foundation for the Advancement of Teaching, companies in the United States are providing job training and general education for nearly eight million people, about equivalent to the enrollment of the nation’s four-year colleges and universities.
(A) equivalent to the enrollment of
(B) the equivalent of those enrolled in
(C) equal to those who are enrolled in
(D) as many as the enrollment of
(E) as many as are enrolled in

A) here instead of about if author has used "which is" then it will be more prominent. otherwise the construction is awkward. If about is included in the underline portion, then we can correct the answer by dropping the word about in the sentence.

B) Again awkward construction.

C) Same as (A). About makes the construction awkward. But "About" cannot be dropped here.

D) as many as is the correct Idiom but original sentence wants to show the impact of one action on the another action. So, it's not parallel with action "United States are providing job training".

E) Correct Idiom + Parallel construction of action. Hence correct choice to follow.

Hope this helps.

Yes, I got it.
Thanks

Can someone provide a better explanation for the equivalent rule