https://classic.7sage.com/lsat_explanations/lsat-70-section-1-question-24/
I ran into some issues with a LR question on PT 70 S1 and would love some inputs from other students here. I chose E, which is the wrong answer, but I'm not at all sure why I am wrong.
For #24 (the Macro/Micronutrients question), the last sentence reads:
"To remain healthy in the long run, soils for lawns require the presence of these macronutrients and also trace amounts of micronutrients...which are depleted when grass clippings are raked up..."
Isn't this a conditional claim?
Healthy --> Macro + Micro, and
Grass Clips Raked --> Micro Depleted
Assuming that IF micronutrients are there, THEN it's NOT depleted (which is very reasonable to me), then taking the contrapositive, we can connect the two:
Healthy --> Macro + (Micro --> /MicroDepleted --> /GrassClipsRaked)
(Sorry for the visual representation. Couldn't get the format to look right. But Healthy is connected to Macro AND Micro, and Micro is itself connected to the rest of the chain).
So if you deny the last necessary condition, then you should be able to work your way back. So if Grass Clips are raked, then Micro Depleted, then /Micro (micronutrients are gone), then /Healthy.
I thought E communicated exactly this: "Homeowners who rake up their grass clippings are unable to maintain the long-term health of the soils in their lawns and gardens," which in lawgic is
Grass Clips Raked --> /Healthy
which to me is exactly as above. Where am I wrong?