IMO, D is better than choice than E. In E, pronoun "they" is ambigious. Its the position of "they" that creates problem. However, in D, "they" has a confirmed antecedent "young female ballet dancers and gymnasts". This is because the clause "Because they desire to be as thin as possible" is a modifier clause that modifies the subject "young female ballet dancers and gymnasts". Hence "D" seems better choice.

E looks fine but when it is compared to D (which is 100% clear), 'they' in 'E' can refer to habits, although logically, no one would think so.

I could not understand your logic. You are saying position of "that" in E is ambiguous. Whatever logic you applied to reach this conclusion is also applicable to option "D". More ever, a sentence starting with "because" is somewhat awkward and there was a way to more precise sentence as in option "E".
Please elaborate..

I could not understand your logic. You are saying position of "that" in E is ambiguous. Whatever logic you applied to reach this conclusion is also applicable to option "D". More ever, a sentence starting with "because" is somewhat awkward and there was a way to more precise sentence as in option "E".
Please elaborate..[/quote]

I know it can get confusing. Look closely. As I mentioned, in D, "that" is a part of the modifying clause. Infact, the sentence can also be written as "Young female ballet dancers and gymnasts, because they desire to be as thin as possible, sometimes fail to maintain good eating habits." Option E is indeed highly precise but with a very subtle error.
Hope this helps.

Again whatever I say is only my opinion.

My Pick is D.

'they' in D refers to young athletes , but 'they' in E can refer to 'eating habits ' also. this 'they' in E is ambiguous.

my 2 cents

"Desire to be as thin as possible" is the modifier here
In general it makes sense to put modifier as close to the subject it modifies as possible,
so D is doing a good ob by putting this closer to dancers and gymnasts than E, which is putting modifier closer to eating habits.

I agree with the original explanation

I looked through different english forums about the use of BECAUSE in the beginning of a sentence. and the consensus is - it is absolutely fine to start a sentence with BECAUSE.

There is a simple rule to keep in mind:

A sentence can begin with because, but you must include a second clause. For example, "Because I said so" is not a sentence. However, "Because it was raining, the baseball game was cancelled" is acceptable. A good rule to follow is that if you do not need a comma, it is probably a sentence fragment if you start with because.

IMO D.

A ) Original sentence- maintain good eating habits caused by the desire to be as thin as possible - conveys wrong meaning
B ) Awkward sentence
C ) "Because they desire to be as thin as possible" can not modify "good eating habits "
D ) "Because they desire to be as thin as possible" correctly modifies young female ballet dancers - no pronoun reference error - correct answer choice
E ) they - can refer to Young female ballet dancers or good eating habits - pronoun reference error.

Young female ballet dancers and gymnasts sometimes fail to maintain good eating habits caused by the desire to be as thin as possible.

D) Because they desire to be as thin as possible, young female ballet dancers and gymnasts sometimes fail to maintain good eating habits.
E) Young female dancers and gymnasts sometimes fail to maintain good eating habits because they desire to be as thin as possible.

Let me try with two contenders

( D ) doesnt create any confusion as far as Pronoun " They " is concerned, it can very easily be inferred that "THEY" refers to Young female.......

( E ) In this option, one may confuse that THEY refers to the eating habits and not the young female.....

The crux is to understand the construction of any sentence while evaluating the given answer choices rather than choose answer choice on the basis of implied meaning or the implied logical reasoning of the sentence.

hope this helps

'D' - 1.29 mins:-D
This is a tricky question I was confused between A and D but finally chose D.

(A) Young female ballet dancers and gymnasts sometimes fail to maintain good eating habits caused by the desire to be as thin as possible. 'habits caused by the desire to be as thin as possible' seems odd
(B) Good eating habits sometimes fail to be maintained by young female ballet dancers and gymnasts caused by desiring to be as thin as possible. Seems Good eating habits fail to maintain young female
(C) Because they desire to be as thin as possible, good eating habits are sometimes not maintained by young female ballet dancers and gymnasts. Modifier issue - Because they desire .. good eating habits
(D) Because they desire to be as thin as possible, young female ballet dancers and gymnasts sometimes fail to maintain good eating habits. Choose based on PoE and meaning
(E) Young female dancers and gymnasts sometimes fail to maintain good eating habits because they desire to be as thin as possible. 'They' could have multiple antecedents Habits or Dancers and Gymnasts'

A) Young female ballet dancers and gymnasts sometimes fail to maintain good eating habits caused by the desire to be as thin as possible.
(B) Good eating habits sometimes fail to be maintained by young female ballet dancers and gymnasts caused by desiring to be as thin as possible.- Passive Voice
(C) Because they desire to be as thin as possible, good eating habits are sometimes not maintained by young female ballet dancers and gymnasts.- Misplaced Modifier error
(D) Because they desire to be as thin as possible, young female ballet dancers and gymnasts sometimes fail to maintain good eating habits.
(E) Young female dancers (Its Ballet dancers not just dancers) and gymnasts sometimes fail to maintain good eating habits because they desire to be as thin as possible.

How to choose between D and E ????

Young female ballet dancers and gymnasts sometimes fail to maintain good eating habits because they desire to be as thin as possible.

Answer choice E is wrong because "they" can refer to either "young female ballet dancers and gymnasts" or "good eating habits." It is ambiguous.

Because they desire to be as thin as possible, young female ballet dancers and gymnasts sometimes fail to maintain good eating habits.

Answer choice D above does not have the ambiguity problem because the first clause modifies "young female ballet dancers and gymnasts" so the "they" is known to refer to "young female ballet dancers and gymnasts"

Young female ballet dancers and gymnasts sometimes fail to maintain good eating habits caused by the desire to be as thin as possible.

A) Young female ballet dancers and gymnasts sometimes fail to maintain good eating habits caused by the desire to be as thin as possible. good eating habits are caused by the desire to be thin?? Reverses the meaning of the sentence. Wrong
B) Good eating habits sometimes fail to be maintained by young female ballet dancers and gymnasts caused by desiring to be as thin as possible. same meaning error as A
C) Because they desire to be as thin as possible, good eating habits are sometimes not maintained by young female ballet dancers and gymnasts. they=good eating habits. wrong
D) Because they desire to be as thin as possible, young female ballet dancers and gymnasts sometimes fail to maintain good eating habits.
E) Young female dancers and gymnasts sometimes fail to maintain good eating habits because they desire to be as thin as possible.they=good eating habits. wrong

It all about the meaning and modifier placement . so D

Is it a possibility that we can eliminate E on the basis that in original it is mentioned ballet dancers whereas in E it says dancers...........
Just wondering............
_________________

mahakmalik

The problem with E is that the pronoun they is ambiguous. It could refer either to habits or to dancers and gymnasts.

The omission of the word ballet seems to be inadvertent; in a GMAT test, you would probably not find such omissions.

I don't really see a meaningful difference btw. D and E. Substitute "eating habits" for 'they' and the sentence clearly becomes absurd. It's pretty obvious that they refers back to ballet dancers and gymnasts.

Here's an example to illustrate my point: The Mavericks told the Celtics that they would win. This sentence is incorrect because we don't know whether 'they' refers to Mavericks or to Celtics, either of which would be sensible in this sentence. Now, if I used another example - The Mavericks practice fundamentals because they know that doing so is essential to win - it's pretty obvious that 'they' can only mean the Mavericks. 'Fundamentals know that doing so is essential to win' is an illogical meaning. The fact that 'they' is closer to 'fundamentals' and not to 'Mavericks' in this sentence doesn't create any confusion. I think the same logic applies to this SC question.

I agree with your point to an extent, but the writer of this problem eliminates answer E stating the same reason I mentioned earlier, that the pronoun is ambiguous. Moreover we have seen some examples from the official guide, in which although the antecedent for a pronoun is very clear from the context of meaning, the usage has not been allowed because of existence of another possible antecedent, even though that other antecedent would give rise to an absurd meaning to the sentence.

However there are examples that support your view as well... that an answer has been accepted although there are two antecedents of which only one is meaningful !!

Considering your point, I would say that we should eliminate an answer on the basis of pronoun ambiguity - when one of the antecedents give rise to an absurd meaning - only as a last resort. When we are stuck between two answers and none of them can be eliminated on the basis of grammar or more obvious meaning problem, we would use this ambiguity to eliminate one of them.

Young female ballet dancers and gymnasts sometimes fail to maintain good eating habits caused by the desire to be as thin as possible.

(A) Young female ballet dancers and gymnasts sometimes fail to maintain good eating habits caused by the desire to be as thin as possible.
(B) Good eating habits sometimes fail to be maintained by young female ballet dancers and gymnasts caused by desiring to be as thin as possible.
(C) Because they desire to be as thin as possible, good eating habits are sometimes not maintained by young female ballet dancers and gymnasts.
(D) Because they desire to be as thin as possible, young female ballet dancers and gymnasts sometimes fail to maintain good eating habits.
(E) Young female dancers and gymnasts sometimes fail to maintain good eating habits because they desire to be as thin as possible.

[b]In option E) the word ballet is absent and this changes the meaning. We always have to stick to the meaning, which the original sentence conveys [/b]