## PT54 S2 Q26

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vamos

Posts: 47
Joined: Sat Jan 15, 2011 2:50 am

### PT54 S2 Q26

This is a Justify/Sufficient Assumption question which involves conditional reasoning. I'm having trouble diagramming the stimulus, especially the 3rd and 4th sentences.

1: A --> B
2: B --> C
3: ? (should a variable be assigned to this sentence?)
4/Conc: ? --> ? (the conclusion seems like it using the information from C as the sufficient and necessary condition)

EarlCat

Posts: 606
Joined: Mon Mar 12, 2007 4:04 pm

### Re: PT54 S2 Q26

vamos wrote:This is a Justify/Sufficient Assumption question which involves conditional reasoning. I'm having trouble diagramming the stimulus, especially the 3rd and 4th sentences.

1: A --> B
2: B --> C
3: ? (should a variable be assigned to this sentence?)
4/Conc: ? --> ? (the conclusion seems like it using the information from C as the sufficient and necessary condition)

It's not quite what you're doing here because you didn't tell us what you're calling A and B, etc. I'll try to diagram out how I'm seeing it.

1/2: OldPartsDifficult --> NewSirens --> EnhancedSafety

I think it's easiest to think of sentences 1 & 2 as the premises and sentences 3 & 4 as the conclusion. Although 3 is really a premise, it's not attached to anything, so I'm attaching it as a sufficient condition for the conclusion that safety will in fact be enhanced.

So, knowing that OPD --> NS --> ES, what assumptions would allow us to conclude that SOOB --> ES?

vamos

Posts: 47
Joined: Sat Jan 15, 2011 2:50 am

### Re: PT54 S2 Q26

So the correct answer would be SOOB --> OPD.

I found this problem difficult to diagram, but I think with more practice I should be fine. Thanks again EarlCat.

EarlCat

Posts: 606
Joined: Mon Mar 12, 2007 4:04 pm

### Re: PT54 S2 Q26

vamos wrote:So the correct answer would be SOOB --> OPD.

I found this problem difficult to diagram, but I think with more practice I should be fine. Thanks again EarlCat.

No problem. SOOB --> NS could also be a correct answer.