Doubtful GMATPrep Solution

Question

Please see the attached CR. In my opinion, the questions should be "strengthen" instead of "weaken" to match the correct answer.

selene · Answer

If the OA is A, then you are right. It strenghtens the argument.

am100 · Answer

Yes, the OA is A and this is the second time I have come across an error on the GMATPrep. Thank though!

jaypshah · Answer

I think the OA is prefectly right. 

The authors argument is that something other than the Herbicides is killing the partridges.

A) says that the lack of small insects which is due to the lack of weeds which in turn is due to the use of Herbicides. Since there is no food for the partridges chicks, their population in coming due to the effect that Herbicides have. Hence, weakens the authors argument.

Yurik79 · Answer

I think that this is possible cause I come across about 2 or 3 errors in quant sections OA's

karlfurt · Answer

I think the OA is right, as jaypshah explained.

dips · Answer

I also agree with jaypshah.
 "herbicide use is responsible for population decrease" is true even though the reason given in the argument is wrong - it is toxic in nature. Because the reason is wrong does not mean the cause (herbicide being responsible) is wrong. 

The conclusion can be weakened using A only.

Doubtful GMATPrep Solution

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards