Question #1059

Answer choice B and C

Started by Mariana · started 2019-02-27 15:45 · last activity 2022-02-06 13:18 · 4 replies

I am coming up with the same flawed pattern of reasoning for B and C. I see from the message board that B is the correct answer, so please help me determine what I am doing wrong in answer choice c so that it can be eliminated as an option. Here is how I have it graphed out: PR: EA --> OG Not OG ---> Not EA P: Not EA C: Not OG

Replies

  1. Ravi · 2019-03-01 17:28

    @Mariana, Happy to help. Answer choice (C) is actually pretty different from answer (B) Answer choice (B) correctly mirrors the flaw of the stimulus. The stimulus maps to quota - ->experienced salesperson and the conclusion the writer makes is /quota - ->/experienced salesperson The write makes the flaw of invoking the failure of the sufficient condition to conclude the failure of the necessary condition. This is incorrect logic. Moving on to (C), it states, "only oceanographers enjoy the Atlantic in midwinter. Thus, we may expect that Gerald does not enjoy the Atlantic in midwinter, since he is not an oceanographer" This translates to Premise: Enjoy Atlantic midwinter - ->oceanographer Conclusion /oceanographer - >/Enjoy Atlantic midwinter The conclusion of (C) is a valid contrapositive of the premise. This is sound reasoning, and this does not parallel the flawed reasoning in either the stimulus or in (B). You actually correctly diagrammed (C). It sounds like you just might have failed to see that (C) has valid reasoning, whereas (B) does not. Let's look at (B) now. (B) says, "Only music lovers take this class. Thus, since Hillary is not taking this class, she apparently does not love music." (B) can be diagrammed to Take class - >music lover /take class - >/music lover This is a flawed argument. Do you see how it's exactly the same flaw as we found in the stimulus? The argument is incorrectly invoking the failure of the sufficient condition to conclude the failure of the necessary condition. Thus, (B) is the correct answer choice. Does this make sense? Let us know if you have any other questions!

  2. erica · 2021-08-11 13:51

    hi! how are B and C different I really don't see it. my diagram for B: P: TC ---> MS P: NOT TC C: NOT MS and my diagram for C: PR: EAW ----> O PR: NOT EAW CL: NOT O pls help! thank you.

  3. Ravi · 2022-02-06 13:17

    Your diagram for B is good. For your diagram for C, @erica, not O is the premise, and not EAW is the conclusion. Not O is the premise because it comes after the word "since," which is a premise indicator.

  4. Ravi · 2022-02-06 13:18

    So the correct diagram for C is PR: EAW-->O PR: NOT O C: NOT EAW

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