Boy did you pick a good one, adlindsey! I'm surprised we haven't had more discussion on this one already.
One way to approach this is to build a diagram, but by bit. Here are my abbreviations:
Increased Ag Production = IAP
Biodiversity = B
Conventional Ag = CA
Sustain Economic Growth = SEG
The first claim can be dealt with as a multi-conditional, like this:
IAP
+
CA
B
The next claim makes SEG sufficient for IAP:
SEG
IAP
The conclusion then links SEG to
CA, but leaves out any connection to B:
SEG
CA
To strengthen this link, I need to pull B back into the picture. To prove
CA, I need both IAP AND B, but SEG only proves IAP. So, add in that SEG is sufficient for B, and we're there! Our prephrase, then, should be:
SEG
B
(Sustained economic growth is sufficient for biodiversity, or put another way, don't grow the economy without also maintaining biodiversity)
The best match for us is answer B. That is the only answer that ties SEG to B, which is what we need in order to get all the way through the chain to getting away from conventional agriculture.
A lot of work to get there, and the potential to get lost and confused along the way, but at the end of the journey there is only one contender that could possibly be our credited response, and so it is worth the extra effort.
I hope that clears it up for you!
Adam M. Tyson
PowerScore LSAT, GRE, ACT and SAT Instructor
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