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## #26 - Decreased reliance on fossil fuels is required if

• PowerScore Staff
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#43381
tomthomse@gmail.com
• Posts: 5
• Joined: May 15, 2020
#76036
Hi, could you please explain why D is correct? I tried to diagram this one, and the closest I could get to paralleling the stimulus was C. Thanks for any help.
Christen Hammock
• PowerScore Staff
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• Joined: May 14, 2020
#76125
Hi Tom!

Let's take this from the beginning. The flaw in this passage is Mistaken Reversal: we can't conclude that ending global warming requires economic incentives just because offering economic incentives would be sufficient to decrease current reliance on fossil fuels.

Answer Choice (D) makes exactly this mistake: just because increasing salaries would be sufficient to keep good teachers in the profession doesn't mean that this increase is necessary.

Answer Choice (C) doesn't actually include a flaw! It's a valid logical chain. If graduating from high school is necessary to go to college, and going to college is necessary to get a professional job, it's valid to skip the middle condition (going to college) and conclude that going to high school is necessary for getting a professional job!
Shaela L. Hayes
• Posts: 9
• Joined: Jun 01, 2021
#88103
Hi!

Can you please tell me where I went wrong in my initial diagram? And thoroughly explain how to diagram "required if" statements?

Premise: (Halt global warming) --> (Lower reliance on fossil fuels)
Premise: (Economic incentives) --> (Lower reliance on fossil fuels)
Conclusion: (Economic incentives) --> (Halt global warming)

Thanks!
Poonam Agrawal
• PowerScore Staff
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• Joined: Apr 23, 2021
#88136
Hi Shaela,

Your diagram was almost there! Remember that conditional statements take the form of Sufficient Necessary. If something is required, it is the necessary condition.

Here is how we can diagram the stimulus:

DRF = decreased reliance on fossil fuels
GWH = global warming halted
EI = economic incentives

Sentence 1: GWH DRF
Sentence 2: EI DRF
Sentence 3: GWH EI (it says economic incentives are required to halt global warming)
Answer choice (D) can be diagrammed as follows:

KGT = keeping good teachers
IE = improving education
ITS = increase in teachers' salaries

Sentence 1: IE KGT
Sentence 2: ITS KGT
Sentence 3: IE ITS
See the similarity between answer choice (D) and the stimulus? That's how you know we have found the parallel flaw - hope that helps!
lawlandmem
• Posts: 8
• Joined: Mar 24, 2021
#89269
Why is B wrong?

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