The pesticide Azocide, introduced to central valley farms

Question

The pesticide Azocide, introduced to central valley farms three summers ago, has proven ineffective  because other pesticides' chemical compositions already in wide use  neutralizing its desired effect.
a. because other pesticides' chemical compositions already in wide use 

b. because of the chemical compositions of the pesticides already in wide use 

c. due to other pesticides already in wide use, whose chemical compositions have been 

d. since, due to the chemical compositions of other pesticides already in use, those pesticides have been 

e. because of other pesticides and their chemical compositions already in use, which have been

Please answer.

GMAThopeful · Answer

The underlined portion should give reason why the pesticide Azocide has proven ineffective. 

a. because other pesticides' chemical compositions already in wide use
 unnecessary use of possessive case 

b. because of the chemical compositions of the pesticides already in wide use
 awkward 

c. due to other pesticides already in wide use, whose chemical compositions have been
 Correct - the part after whose explains why the pesticide Azocide has proven ineffective. 

d. since, due to the chemical compositions of other pesticides already in use, those pesticides have been
 Verbose  

e. because of other pesticides and their chemical compositions already in use, which have been 
 awkward

catgmat · Answer

Thank you GMAThopeful for the good explanations, here are some more:

(A) chemical compositions are compared with the pesticide (don't compare apples to oranges!)

(B) same mistake like (A), 'because of' is awkward

(C) due to is the right idiom to compare pesticide with other pesticides, therefore  correct  

(D) wordy

(E) 'because of' is awkward, sentence is quite wordy

LM · Answer

Straight and clear the answer is "E". Do you need explanation for this one? Please tell..I will try to explain

anandsebastin · Answer

a. because other pesticides' chemical compositions already in wide use 
 - sounds like it is the chemical compositions that are already in wide use, rather than the other pesticides, themselves. 
b. because of the chemical compositions of the pesticides already in wide use 
 - most appropriate.  B  is my choice. .
c. due to other pesticides already in wide use, whose chemical compositions have been 
 - incorrectly allocates the reason. Azocide is ineffective not just because of other pesticides already in use, but rather because the chemical composition of those pesticides neutralizes the desired effects of Azocide. 
d. since, due to the chemical compositions of other pesticides already in use, those pesticides have been 
 -too awkward, and wordy? 
e. because of other pesticides and their chemical compositions already in use, which have been
 -separates "other pesticides" and "their chemical compositions" into distinct entities. 

Anand

anandsebastin · Answer

B is in the format "X is not effective, because of Y in Z neutralizing X".

So, that still stands.

Anand

raconteur · Answer

C for me.

C states that the cause is "due to the other pesticides in wide use, whose chemical compositions  have been "

I think the "have been" clearly refers back to the fact that Azocide was introduced a few months ago and up to now, its desired effect has been neutralized. 

B would be better if  are  was added at the end... "because of the chemical compositions of the pesticides already in wide use ARE neutralizing..." Without  are , it sounds awkward to me.

vshaunak@gmail.com · Answer

Thanks for responses. OA is 'C'
'Due to' should be used,

vineetgupta · Answer

I also chose B but 'because of' in B is incorrect...C it is.

vineetgupta · Answer

There is just one more thing i want to get clarified.

Due to can only be used when it can be replaced by caused by.

Now C says:
The pesticide Azocide, introduced to central valley farms three summers ago, has proven ineffective due to other pesticides already in wide use, whose chemical compositions have been 

The pesticide Azocide, introduced to central valley farms three summers ago, has proven ineffective  caused by  other pesticides already in wide use, whose chemical compositions have been 

This is awkward.

Now because of can only be used when it can answer the question  Why? 

Now B says
The pesticide Azocide, introduced to central valley farms three summers ago, has proven ineffective because of the chemical compositions of the pesticides already in wide use 

This answers the question why the pesticide has proven ineffective.

So B makes sense.

Source:  https://www.agriculture.purdue.edu/agcomm/ontarget/0609/Grammar_trap.htm 

Please see the link above....Any thoughts??

The pesticide Azocide, introduced to central valley farms

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