Sentence Correction

A report released by the American Diabetes Association maintains that much of the increase in cases of type II diabetes can be attributed to the poor eating and exercise habits of young Americans.

(A) much of the increase in cases of type II diabetes can be attributed
(B) many of the increase in cases of type II diabetes are attributable
(C) they can attribute much of the increase in cases of type II diabetes
(D) doctors attribute much of the increase in cases of type II diabetes
(E) many of the cases of increased type II diabetes can be attributed
[spoiler]OA: A[/spoiler]

Kaplan800 says 'E' is not idiomatic. Can somebody explain what is wrong with 'E'. How can we correct the error in 'E' and still write a correct sentence?

satishchandra wrote:A report released by the American Diabetes Association maintains that much of the increase in cases of type II diabetes can be attributed to the poor eating and exercise habits of young Americans.

(A) much of the increase in cases of type II diabetes can be attributed
(B) many of the increase in cases of type II diabetes are attributable
(C) they can attribute much of the increase in cases of type II diabetes
(D) doctors attribute much of the increase in cases of type II diabetes
(E) many of the cases of increased type II diabetes can be attributed
[spoiler]OA: A[/spoiler]

Kaplan800 says 'E' is not idiomatic. Can somebody explain what is wrong with 'E'. How can we correct the error in 'E' and still write a correct sentence?

Here "of the" looks redundant. Moreover, "Many" is working as an adjective here and it should directly be placed next to the noun it is modifying (cases).

The problem with (E) is that in the fragment

many of the cases of increased type II diabetes can be attributed

What is being "increased" is the "type II diabetes"

The original meaning of the sentence was that the "increase" was in number of "cases of type II diabetes"

Therefore (E) is invalid, as it does not preserve the intended meaning of the sentence.

Many

The word "many" is used to modify something that can be counted. There are many GMAT questions on BTG.

Much

The word "much" is used when you're modifying something that can't be counted. I have much to learn about the GMAT.

As you consider whether something is countable, be very strict. Unless you can literally count the modified word, use "much."

I am okay with A, but what is wrong with D?

Please explain.

Thanks.

D changes the meaning of the sentence. The original sentence is telling us that the ADA is making the claim. D means that the doctors are making the claim.