A tougher split between D & E ( Nigeria independence)

[eggpain24]

21. When Nigeria achieved full independence in 1960, they had already established a federal political structure consisting of three regions based on the three major population clusters that were in its borders.

(A) they had already established a federal political structure consisting of three regions based on the three major population clusters that were in
(B) they already had established a federal political structure consisting of three regions that was based on the three major population clusters inside
(C) they already had established a federal political structure that consisted of three regions based on the three major population clusters in
(D) it had already established a federal political structure that consisted of three regions based on the three major population clusters within
(E) it already had established a federal political structure consisting of three regions being based on the three major population clusters it had within

use the pronoun issue quickly rule out "ABC"
here is the split between D and E

E is inferior because of the existence of "being" and "it had"
these two parts seem to be much wordier than D

but I know that wordy is a judgement call, not an absolute blunder

did I miss any obvious mistakes in choice E, hope instructors can brief me on this. thanks!

[thanghnvn]

21. When Nigeria achieved full independence in 1960, they had already established a federal political structure consisting of three regions based on the three major population clusters that were in its borders.

(A) they had already established a federal political structure consisting of three regions based on the three major population clusters that were in
(B) they already had established a federal political structure consisting of three regions that was based on the three major population clusters inside
(C) they already had established a federal political structure that consisted of three regions based on the three major population clusters in
(D) it had already established a federal political structure that consisted of three regions based on the three major population clusters within
(E) it already had established a federal political structure consisting of three regions being based on the three major population clusters it had within

use the pronoun issue quickly rule out "ABC"
here is the split between D and E

E is inferior because of the existence of "being" and "it had"
these two parts seem to be much wordier than D

but I know that wordy is a judgement call, not an absolute blunder

did I miss any obvious mistakes in choice E, hope instructors can brief me on this. thanks!

E is wrong because

"clusters it had" means two possibility. the first is

within its boder, it had 3 cluster

this meaning is not intended, not logic. "within its boder" is adverb in this case

the second is

it had 3 clusters within its boder.

if this case happen, "cluster" must touching "its boder" but it dose not touch. "its boder" is adjectival of "cluster".

in both possibilities, this is wrong .

[RonPurewal]

Is this problem actually in the GMAT PREP software?
You've posted it with a problem number ("21."), strongly suggesting that you got it from somewhere else.

If this problem is actually from the official software, please kindly post a screen shot of it. Thanks.

[eggpain24]

Is this problem actually in the GMAT PREP software?
You've posted it with a problem number ("21."), strongly suggesting that you got it from somewhere else.

If this problem is actually from the official software, please kindly post a screen shot of it. Thanks.

it is indeed from GMAT PREP software. There might be some typo mistakes when I copy and paste.

But I've quit the software and it is hard for me to redo the exam and find this question, RON - -

[jlucero]

Is this problem actually in the GMAT PREP software?
You've posted it with a problem number ("21."), strongly suggesting that you got it from somewhere else.

If this problem is actually from the official software, please kindly post a screen shot of it. Thanks.

it is indeed from GMAT PREP software. There might be some typo mistakes when I copy and paste.

But I've quit the software and it is hard for me to redo the exam and find this question, RON - -

1. there wouldn't be any typo mistakes if you did copy and paste.
2. the top references google finds for this problem are from bootleg documents which are TERRIBLE sources to learn from
3. you don't need to redo the exam to find the question again, if it is indeed from GMAT prep software. We ask for screenshots so that we can keep our focus on good questions, and this problem appears sketchy.