## PT 50, LR Section 4, #13 ergg confusingg

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s1m4

Posts: 214
Joined: Tue Jan 12, 2010 10:04 pm

### PT 50, LR Section 4, #13 ergg confusingg

Can anybody shine some light on me for PT 50, LR Section 4, #13? The argument / answer choices are so complex that its difficult for me to understand the reasoning behind the why A, B, C are all incorrect.

I also cannot see why D is correct.. I mapped it out as "Article... --> "uses photo.." but so what?

Can somebody please explain the line of reasoning and why some answers can be disqualified?

s1m4

Posts: 214
Joined: Tue Jan 12, 2010 10:04 pm

### Re: PT 50, LR Section 4, #13 ergg confusingg

sorry, I realize now that B is correct, but I still cant see why

chewdak

Posts: 106
Joined: Fri Apr 03, 2009 5:54 pm

### Re: PT 50, LR Section 4, #13 ergg confusingg

Let me try:
It is an inference question, so we know there is a logic hole somewhere.
The argument in simple terms is:
There is a phenomenon A.
A causes B.
Therefore, A causes C.
This argument would work if we knew that B causes C, which is what (B) has.
Does this make sense?

s1m4

Posts: 214
Joined: Tue Jan 12, 2010 10:04 pm

### Re: PT 50, LR Section 4, #13 ergg confusingg

Yes, that definitely makes sense after I mapped it out the way you told me.

Thx a lot for ur input!