Although no proof yet exists of electromagnetic fields

Question

Although no proof yet exists of electromagnetic fields generated by household appliances posing any health threat, mounting scientific evidence has convinced many experts that there is cause for concern.
(A) of electromagnetic fields generated by household appliances posing any health threat
(B) of electromagnetic fields generated by household appliances that pose any threat to health
(C) that electromagnetic fields generated by household appliances pose any threat to health
(D) that poses any threat to health from electromagnetic fields generated by household appliances
(E) for any health threat posed by electromagnetic fields generated by household appliances

Antmavel · Answer

I would go for C

 a proof yet exists of  seems not correct, it should be  a proof of 
A and B are out

E seems wordy

Between C and D I would go for C which seems clear and more direct

gmataquaguy · Answer

Wowza...This is one of the toughest questions I've seen on this board. Trying to breakdown each answer seems near immposible  . <DC>, IC. All answer choices fit this structure.


Could someone/anyone breakdown why each answer choice is wrong? 

D: Wrong because it make it seem like the "proof" poses a threat. 
E: Wrong becuase posed by electromagnetic fields genereated by household appliaces is absurd. 

Anyone care to breakdown why A, B are wrong??

I was able to narrow down to get my AC by "listening" to which AC sounds good  . 

To me C appears to be a good choice.

chunjuwu · Answer

I go for C, too. 

A and B are out because 'exists of electromagnetic fields' is unclear. 
D is out necessarily because 'exists that poses any threat to health' is wrong. 

Could anybody help to refute E? thanks 

It seems that ETS does not like 'something for...' sentence style.

gmataquaguy · Answer

OA please.....

I wasnt aware of the fact that "proof that" is an idiom. Neither PR Verbal Workout nor Kaplan has this as an idiom. Where did you guys find that proof that was an idiom.

Vithal · Answer

OA is C

chunjuwu · Answer

You can think 'proof that' as 'evidence that' or 'theory that'. It would be better to use 'that'. 8-)

gmataquaguy · Answer

Could someone/anyone tell me the source of idiom? The reason i'm asking is coz if you didnt know this idiom the degree of difficulty of this SC goes up  . I want to get my hands on the source of this idiom(s). 

I've used PR and Kaplan for their idiom lists. Could someone tell me where they got the idiom "proof that"

Vithal · Answer

IMO the question is not testing idiom

Proof that is not an idiom - that is used to introduce a restrictive clause here which describes what the proof is about.

ashkg · Answer

I too dont think 'proof that' is the idiom. 
Here "that" is used to refer to the clause "no proof exists".

In A I was not comfortable with appliances "posing". "pose" is better.
B uses and additional "that" for the appliances and is not required.
DE are out for various reasons listed.
E. "no proof exists for" doesnt sound correct. "no proof exists of" makes sense.


Go with C.

Although no proof yet exists of electromagnetic fields

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