If that insect is a bee, it can only sting once. It only did sting once. So it is a bee.Which one of the following ex...

Zachary on June 1 at 09:00PM

Knock Out A

When I was running through the practice upon closer look at the language setup of answer choice A.... when it says "because when it is spring, I cannot stop sneezing; and I just sneezed. My main takeaway as two why I personally crossed it out was because the author of this answer is saying he can't stop sneezing which is plural and he technically only "sneezed" is this a valid inference?

2 Replies

Zachary on June 1 at 09:17PM

Ok I actually got it wrong. Why is that? What did I miss? I picked C.

Victoria on September 17 at 10:03PM

Hi @zacharylouiskane@gmail.com

Happy to help!

"If that insect is a bee, it can only sting once."

B --> SO
Not SO --> Not B

There are two flaws committed by the author of this stimulus.

The first flaw is that the author takes the presence of the necessary condition to conclude the sufficient condition.

P: B --> SO
P: SO

C: B

The second flaw is that the author takes the premise that the insect only stung once to conclude that it can only sting once. Maybe it can sting multiple times and it just hasn't gotten around to doing so yet. So, what is the flaw? The author draws a conclusion about the frequency of something based on it occurring only once.

Both of these flaws are mirrored in answer choice (A).

"When it is spring, I cannot stop sneezing."

S --> Not SS
SS --> Not S

The author takes the presence of the necessary condition to conclude the sufficient condition.

P: S --> Not SS
P: Sneeze (Not SS)

C: S

The author also draws a conclusion about the frequency of something (not being able to stop sneezing) based on it only occurring once (I just sneezed).

I'll admit that the use of the plural "can't stop sneezing" threw me off for a second here top. It maybe doesn't match up as perfectly as we'd like it to, but both the flaws made in the argument presented in the stimulus are mirrored in answer choice (A).

Answer choice (C) is incorrect because it doesn't commit either of the flaws committed in the stimulus.

OBP --> MEC
Not MEC --> Not OBP

This is a valid argument drawn using the contrapositive. Additionally, the author does not incorrectly draw a conclusion about the frequency of something based on it occurring only once. We know that OBP are always MEC and this painting is never MEC. Therefore, it is valid to conclude that it is not OBP.

Hope this helps clear things up a bit! Keep up the good work and please let us know if you have any further questions.